Transcript DOS

D.O.S.
Daily Oral Science Warm-ups *
•Most taken from CPO Science
Student TAKS Practice Books
A D. O. S. of Good News!!!
We do not have a
D.O.S. to do on days
we have a lab or test
Thought for the Day
Success is a Journey,
Not a Destination
Joke of the Day
Where do you do your dishes?
In the Zinc
DOS #1
Which of these is NOT a branch of
science?
a.
b.
c.
d.
Chemistry
Biology
History
Physics
CONGRATS VOLLEYBALL
They beat Palacios last night
to go 1 – 0 in District
DOS #2
Which set of elements are in the Noble
Gases Group?
a.
b.
c.
d.
Hydrogen, Lithium, Sodium, Potassium
Helium, Neon, Argon, Krypton
Copper, Silver, Gold, Zinc
Fluorine, Chlorine, Bromine, Iodine
Joke of the Day
Intelligent Life
DOS #3
Which of these are true statements about
the importance of science?
a. Science touches our lives in many ways
everyday
b. Girls need to know as much about science as
boys do
c. Critical thinking and problem solving lead to
inventions that can help improve the quality of life
d. All of the above
Physics Joke of the Day
Our Tax Dollars at Work
Chemistry Joke for the Day
What's the difference between Chemistry
and cooking?
In Chemistry, you should never lick the
spoon.
Birthdays
Erin Stryk – 9/1
Go Cobras
DOS #4
Regarding heating materials in the laboratory,
which of the following statements is NOT
true?
a. When heating chemicals in a test tube, point the
opening of the test tube away from yourself and
others
b. Work with chemicals that produce gases and vapors
only in a well-ventilated room
c. Use hot plates, not open flames, for heating
materials
d. Use tongs or insulated gloves when handling an
object being heated.
Joke of the Day…
in Honor of Tonight’s Blue Moon
(the last one until 2015)
Did you hear about the new restaurant that
just opened up on the moon?
It has fabulous food, but no atmosphere
Go Cobra Volleyball – Beat
Edner
D. O. S. #5
What is the definition of hypothesis?
a. The statement of a scientific problem
b. The study of cloning hippopotami
c. The results obtained from conducting
scientific experiments
d. The prediction of an answer to a
scientific problem
Joke of the Day
A man walks into his lab and asks Group 18,
“Where are all the other elements?”
Group 18 replies to the man, “They ARGON”
(are gone)
Contributed by Luke Smith 6th period
D.O.S. #6
What common lab instruments would you
use to measure mass and volume?
a.
b.
c.
d.
Balance and metric scale ruler
Metric scale ruler and graduated cylinder
Balance and graduated cylinder
Beaker and graduated cylinder
Joke of the Day
What did Hurricane Isaac say to the Island?
I’ve got my EYE on you
D.O.S. # 7
Name the 4 base SI units
a.
b.
c.
d.
feet, inches, yards, miles
meter, gram, liter, seconds
feet, inches, meters, centimeters
Celsius, Fahrenheit, seconds, hours
Joke of the Day
The Battle of the Lab Equipment Dads
Mr. Graduated Cylinder
vs
Mr. Thermometer
D.O.S. #8 - P
Convert 34 inches in English units to
metric centimeters (2.54 cm = 1 inch)
a. 13.4 cm
b. 134 cm
c. 86 cm
d. 860 cm
DOS #8 - C
When you clean up after a laboratory exercise:
a. Return all unused, uncontaminated chemicals to
their properly labeled storage area
b. Dispose of all used solutions by carefully
diluting them with water in the sink
c. Dispose of unbroken glass in a special disposal
container labeled for this purpose
d. All of the above
Joke of the Day
Why is electricity so dangerous?
Shocking News - It doesn’t conduct itself
very nicely
Congrats
• Cross Country… Varsity Girls – 3rd, JV
Girls - 1st and Varsity Boys 3rd
– Harley Davis – 1st in JV
– Will Maraggia – 3rd in Varsity
• Volleyball was victorious over Bloomington
• Football had some exciting plays, but
unfortunately Ganado prevailed
• Livestock Judging at Colorado County - ??
D.O.S. #9
A graduated cylinder has an initial volume of
50 ml of water. After an irregular solid
object is added the volume in the
cylinder rises to 60 ml. What is the
volume of the solid?
a. 10 cm3
b. 10 ml
c. Both a and b
d. Neither a or b
Joke of the Day
How do you write the chemical formula for
the following?
BaNa2
BaNaNa
Contributed by Bubby Rowlett – 6th period
June Birthdays
1 – Ben Rogers
3 – Matthew Bellanger
5 – Martha Reyna
6 – Abbie Pooley
9 – Kevin Holdgraf & Carson Popp
11 – Eddie Gonzalez
28 – Leslie Smith
30 – David Franz & Melissa Harms
July Birthdays
12 – Jacob Novak
16 – Courtney McGarrah
19 – Alejandro Garza
August Birthdays
5 – Stephen Salazar
6 – Tristan Garrison and Lauren Morton
8 – Amanda Ament
12 – Amasty Harms & Courtney Sackett
14 – Lane Peterson
20 – A J Rosas
26 – Brady Karl
Sept. Birthdays
Erin Stryk – 9/1
Jay Rubio – 9/11
Irene Reyna – 9/13
Karly Dyson – 9/16
Teton Thedford & Ashton Brogger – 9/19
Mason Davis & Kim Morris – 9/21
Matthew Yarborough – 9/23
Katie Grantland – 9/26
Chazidi Zambrano – 9/27
D.O.S. #10
Imagine you are designing an experiment to
compare the ability of a golf ball and a pingpong ball to bounce on sand. Which of the
following choices is a valid hypothesis?
a. The golf ball bounces highest
b. A ping-pong ball bounces highest
c. Neither ball will bounce
d. All of these are equally valid
Joke of the Day
What crime was the out-of-control chemist
charged with?
A “salt” and battery
Assault
Happy Birthday
Irene Reyna – 9/13
D.O.S. #11
Which is NOT evidence of a chemical change
occurring?
a. Bicycle chain has rusted after being out in
the rain
b. Instant cold pack is activated once you
break the pouch of water inside
c. First step to digesting food is to chew it up
d. Adding baking powder to a cake so it will
rise when cooked
Joke of the Day
The Love Story of
Ice and Bunsen Burner
Happy Birthday
Karly Dyson – Sun., 9/16
D.O.S. #12
What is the correct order for the biomass
Pyramid (from bottom to top)?
a.
b.
c.
d.
Carnivores, herbivores, producers
Producers, herbivores, carnivores
Animals, vegetables, minerals
Minerals, vegetables, animals
Joke of the Day
Space Monkeys
D.O.S. #13
What is an indication a chemical change has
occurred?
a. Bubbles from formation of a gas
b. Precipitate
c. Temperature of new products drops or
increases
d. All of the above
Joke of the Day
• According to the mathematician who
couldn’t pass chemistry….
• ……If the formula for water is H2O, then
the formula for ice should be (H2O) 3
•
---
H2O “cubed”… since ice comes in cubes
Contributed by Amasty
Harms – 4th period
Happy Birthday
Ashton Brogger
Teton Thedford
D.O.S. #14
Which of the following indicates a physical
change may have occurred?
a. A substance changes color when another
substance is added and heat is released
b. A white precipitate forms when you mix two
liquids
c. A beaker of liquid bubbles when another
substance is added
d. A block of wax melts quickly when heated in
a beaker
Joke of the Day
“Oh no”, exclaimed the chemist, “He threw
sodium chloride at me.”
“That’s a salt”
Assault
Contributed by Jade Trowbridge – 4th period
D.O.S. #15
As an athlete is running a 5 K race, her cells need
more oxygen. Which change will help her body
meet the increased demand for oxygen?
a. Her heart beats more quickly
b. Her pancreas releasing more insulin
c. Her breathing becoming more shallow
d. Her sweat glands becoming more active
Joke of the Day
If H2O is water. What is H2O4 *?
Drinking, swimming, bathing, washing
* “H2O for”
D.O.S. #16
Scientists use which of the following to
conduct research
a.
b.
c.
d.
Pythagorean Theorem
Scientific Method
Cafeteria Menu
Law of Wisdom
Thought for the Day
Perseverance….
A diamond is a chunk of coal that stuck
to its job even when it was under a
lot of pressure
Homecoming Court
HAPPY BIRTHDAY
Matthew Yarborough
D.O.S. #17
Which is a physical property of matter?
a.
b.
c.
d.
Boiling Point
Reactivity
Toxicity
Corrosivity
Joke of the Day
What kind of pants do biologists wear?
Designer genes (jeans)
Homecoming Court
D.O.S. #18
A block of iron has a volume of 10.0 cm3 and a
mass of 17.0 g. What is the density of iron?
a. 170.0 g/cm3
b. 2.70 g/cm3
c. 0.590 g/cm3
d. 1.70 g/cm3
Joke of the Day
New Formula for Water
Senior Homecoming Court
Happy Birthday
Katie Grantland
D.O.S. #19
What is the percent fat in a candy bar that has
250 g of fat and weighs a total of 595 g?
a.
b.
c.
d.
345%
238%
42%
4.2%
Joke of the Day
If you aren’t part of the solution, you are part
of the precipitate
Happy Birthday
Chazidi Zambrano
D.O.S. #20
When a gas stove is used to cook food, methane gas (CH4)
reacts with oxygen gas (O2) and carbon dioxide (CO2)
and water (H2O) are produced. According to the law of
conservation of mass, which statement is true about
this reaction?
a. Mass of methane gas burned must equal mass of
carbon dioxide produced
b. The combined mass of carbon dioxide and water
produced must be equal to the combined mass of
methane gas and oxygen burned
c. Some of the carbon atoms in the methane gas will
be converted into oxygen atoms
d. If more oxygen is added to the reaction, more
carbon dioxide and water will be produced
Joke of the Day
Why did the physicist think the chicken
crossed the road?
Chickens at rest tend to stay at rest.
Chickens in motion tend to cross the road
Homecoming 2012
Beat
Rockport
D.O.S. #21
What is one reason that dehydrated patients are given
intravenous solutions of pure water with a small amount of
dissolved salt rather than just pure water?
a. To help prevent cells from shriveling because of the
pressure caused by osmosis
b. So pressure caused by osmosis will cause a net
movement of salt into cells
c. So dissolved substances will be transported across cell
membranes and out the cells
d. To help keep the concentration of dissolved substances
inside and outside the cell equal
Homecoming Joke
Oxygen went to homecoming with
Potassium.
When asked how the date went Oxygen
replied, “OK”
CONGRATS
HOMECOMING
ROYALTTY
David Franz – King
Jordin Jones – Grand Duchess
D.O.S. #22
Name a chemical property of a material
a.
b.
c.
d.
Ductility
Freezing Point
Corrosivity
Solubility
Joke of the Day
Did you hear about the chemist reading a
book on helium????
He just couldn’t put it down
Twilight
Homecoming Crowd
D.O.S. #23
What percentage of the
calories in one
serving of tortillas
comes from fat?
a.
b.
c.
d.
2%
4%
6%
9%
Joke of the Day
Why are chemists great at
solving problems?
They have all the solutions
Homecoming Royal Ladies
D.O.S. #24
How many grams are in 4.56 kilograms?
a. 45.6 gram
b. 456 grams
c. 4560 grams
d. 45600 grams
Joke of the Day
How did the herpetologist know he would
get married soon?
He caught the garter snake
Thanks Shelby & Dad
D.O.S. #25
If an atom has 4 protons and 5 neutrons,
how many electrons must it have to
remain neutrally charged?
a. 1
b. 4
c. 5
d. 9
Joke of the Day
Two atoms are walking down the street…..
Friday – Oct. 5
D.O.S. Checkpoint #1
Questions 1 – 25
Open Notes
D.O.S. #26
Which population in the food chain is most likely to
have the greatest biomass?
Grass  White-tailed deer  Mountain lions  Vultures
a.
b.
c.
d.
Grass
White-tailed deer
Mountain lions
Vultures
Joke of the Day
A foolish gardener planted a light bulb…
He thought he would grow a Power Plant
Congrats
The Cobra band won
BEST IN CLASS AA
And
OUTSTANDING DRUMLINE AWARD
at the Lamar ISD
And
BEST SOLOISTS
FFA News
• Industrial’s Junior Team placed third in
team judging at Hempstead
• Dustin Hempel’s critter won best in class
at the Heifer Show
D.O.S. #27
Properties of metals include
a.
b.
c.
d.
Bitter taste and reactive with fats
Easily form liquids or gases
Are most often anions
Have free flowing electrons that make them
good conductors of electricity, shiny, ductile,
and malleable
Joke for the Day
What can you make from the chemicals of
Potassium, Nickel, and Iron?
A KNiFe
D.O.S. #28
John and his partner are preparing glass tubing to be used in
their lab investigation. As John pushes a glass tube
through a rubber stopper the glass breaks and cut
John’s hand. His lab partner should first:
a. Notify the teacher there is broken glassware
b. Clean-up the broken glass to prevent further injury
c. Notify the teacher immediately there has been an injury
d. Remind John to lubricate glass tubing and use a turning
motion when inserting glass tubing into stoppers to
prevent breakage and injury
Joke of the Day
Wind power is very popular because it has
lots of fans
D.O.S. #29
How many significant figures does the
following measurement have?
0.00230
a.
b.
c.
d.
2
3
5
6
Joke of the Day
The smooth talking IHS senior guy in Miss
Hunt’s science class says to the freshman
girl, “Baby, I know my chemistry, and
you’ve got one significant figure.”
HAPPY BIRTHDAY
Wayne Zbikowski
CONGRATS
Courtney Sackett
won BEST in SHOW
for her Tiger Oil Pastel
at Jackson County Fair
D.O.S. #30
Which of these represents a compound?
a. Silver
b. Salt
c. Blueberry Muffin Mix (uncooked, loose
berries)
d. Oil and Water
Joke of the Day
What do you get in black socks?
Black holes
We Love Our Cobras
• Band – 2A division champs at Edna Marching Contest. Best
2A horn line. 3rd place Overall in field including big school
bands.
• Football – good game, but tough loss to Rice
• Volleyball – good games, but tough loss to Rice
• Cross County – Girls – 2nd place team Boys - 3rd place team.
Will Maraggia – 2nd place. Chandler Van Horn – 5th place.
Colton Nagel his best race of the year. Crisna Baez – 5th
place
• Cheerleaders – Nice dance moves
• High School Rodeo Success – Shelby Martin 10th place in
poles
• Jackson County Fair Participants….
D. O. S. #31 - P
Which statement is true about projectile
motion?
a. Gravity is the only force that acts upon a projectile,
since we will assume air resistance is negligible
b. Horizontal velocity changes since no unbalanced
forces act in that direction
c. Vertical velocity is influenced by gravity and range of
distance is impacted by angle of the sun
d. At the maximum acceleration of a projectile
horizontal and vertical velocity are zero
D. O. S. #31 - C
You need to go to the lumber yard to get some wood for
the frame of the patio deck you are building that has to
sit at a weird angle due to the location of your house vs.
the property line. You measure the following dimensions
for each side. 8.45 m, 6.3 m, 4.33 m, and 5.2 m
How much wood should you get at the lumber yard?
(Remember sig figs matter)
a. 24 m
b. 24.2 m
c. 24.3 m
d. 24.28 m
Joke of the Day
What do you call a person who keeps on
talking when people are no longer
interested?
A Teacher….
Like Miss Hunt
Opportunity for Extra Points
• Attend Victoria College’s Information Night Tuesday,
October 16th from 5:30 to 8:00 p.m. in the VC Health
Sciences Center
– This event will give prospective students and their
parents an opportunity to explore VC’s areas of study,
financial aid options, scholarships, admissions
requirements, and student life activities.
• Visit with college program people and/or employers in
attendance and complete the VC Info Night Interview
Form from Miss Hunt
• Receive up to 10 extra points on a major grade
Art Show Winners
• See Announcements
D.O.S. #32 - P
Since the 1940’s chemical insecticides have been
used to control insects that damage crops and
spread disease. However, such control efforts
fail when insect pests become resistant to
insecticides as a result of -a. Natural selection
b. Learned behavior
c. Geographic isolation
d. Asexual reproduction
D.O.S. #32 - C
A chemist observes a reaction that gives off an odor
similar to ammonia and the products turn from
blue to red and will not turn back to original color.
This is evidence of what:
a.
Inertia
b.
Physical change
c.
Chemical change
d.
Physical and chemical changes
Joke of the Day
What do you call a joke that is based on
cobalt, radon, and yttrium?
CoRnY
HAPPY BIRTHDAY
Dylan Koehl
HAPPY BIRTHDAY
Daniel Santillan
& Justin (JET) Thompson
Sat. - Oct. 20
GO COBRAS
• Good Try JV
• GO FOOTBALL and VOLLEYBALL.. Beat
the Cowboys
• Good Luck at Regional Band Contest
• Go FFA Judging Team at Calhoun County
Fair
D.O.S. #33
Which state change occurs when a solid
goes directly to a gas?
a.
b.
c.
d.
Melting
Sublimation
Condensation
Freezing
Joke of the Day
How can you save someone with carbon
and praseodymium?
Give them CPr
Created by Cade Peterek
D.O.S. #34
If a person is 6’-3” tall, how tall are they in
meters? (1 inch = 2.54 cm)
a. 191 m
b. 1.91 m
c. 16.0 m
d. 1.60 m
Joke of the Day
What do you call a power failure?
A current event
D.O.S. #35
If the atomic mass of Phosphorous is
30.973761 and the atomic number
is 15. How many neutrons does it
have?
a. 15
b. 2
c. 30
d. 16
Joke of the Day
A neutron bought a Dr. Pepper at the
concession stand…..
HAPPY BIRTHDAY
D J Hart
GOLDEN COBRA BAND
Division 1 Superior Rating
in Region 13 Competition
Celebrate Mole Day 2012 on
Tuesday, Oct. 23 (10/23)
from 6:02 am to 6:02 pm
Activity Period –Miss Hunt’s Room
D.O.S. #36
In a previous D.O.S., a solid placed in a
graduated cylinder had a volume of 10
cm3. If its mass is 50 g., what is the
density?
a.
b.
c.
d.
2 g/cm3
0.2 g/cm3
5 g/cm3
60 g/ cm3
Joke of the Day
My friend’s son dropped out of chemistry
class at college
After the third week he realized he was out
of his element
HAPPY BIRTHDAY
Kenneth (Bubby) Rowlett
Good Luck at District Cross Country
Happy Mole Day 2 U
The mole is a unit of measurement for the
amount of substance or chemical amount.
6.02 x 1023 atoms per mole *
The atomic mass unit = 1 mole of an element
Q: What is Avogadro’s favorite kind of music?
A: Rock ‘N Mole
Celebrate Mole Day 2012 on Tuesday, Oct. 23
from 6:02 am to 6:02 pm *
Mole Day
Song
D.O.S. #37
What is a mole?
a. A lightly furry, little, burrowing critter
b.
c.
d.
A small, dark spot on skin
A unit of measurement for the
amount of substance –
6.02 x 1023 atoms
All of the above
Mole Day Activities
for Science Club
• Remember ~ It’s Avogadro… like avocado
• Which makes Guacamole
• Let’s Explore More about the Mole through a
Lab Activity
• More Mole Day Jokes
D.O.S. #38
Which are the smallest parts of an atom?
a.
b.
c.
d.
Neutrons
Nucleus
Protons
Electrons
Joke of the Day
What are the favorite elements of doctors?
Helium and
Curium
District Cross Country Results
Varsity Girls took
st
1
Varsity Boys took
rd
3
Both will advance to Regional’s!
GO GIRLS
GO GUYS
D.O.S. #39
An ecosystem is
a. Interactive system that includes all parts of
the physical environment
b. The only place life can exist
c. The entire community of organisms that live
there – plants, animals, fungi, & bacteria
d. All of the above
Joke of the Day
What do the doctors in yesterday’s joke do if
they can’t helium or curium sick people?
They barium
Which is also what you do to dead chemistry
teachers
D.O.S. #40 - P
The three factors that actually do affect motion are
a. Velocity, acceleration, momentum
b. Distance, time, speed
c. Friction, gravity, air resistance
d. Reactions, actions, net force
D.O.S. #40 - C
Results of a scientific investigation are
communicated in which step?
a.
b.
c.
d.
Hypothesis
Research
Data collection and analysis
None of the above
Joke of the Day
A mushroom walks into a bar and announces,
“A round of drinks for everyone!”
Another customer remarks, “Well, he seems
like a fun guy.”
(fungi)
D.O.S. #41
What do you call a reaction that produces
heat?
a.
b.
c.
d.
Exothermic
Endothermic
Enthalpic
Intrinsic
Joke of the Day
My doctor doesn’t believe in anesthesia
He’s propane
(pro-pain)
D.O.S. #42 - P
What is the centripetal acceleration of a
bucket moving in a 5 m circular path with
a velocity of 10 m/s? Where ac = v2
r
a.
b.
c.
d.
0.5 m/s2
2 m/s2
20 m/s2
50 m/s2
D.O.S. #42 - C
If there are 12 dozen pencils in a gross how
many individual pencils are there in 1
gross?
a.
b.
c.
d.
1
12
13
144
Joke of the Day
Gravity is a Law…..
…. Law Breakers will be brought down
D.O.S. #43
Products of photosynthesis are:
a.
b.
c.
d.
Glucose and oxygen
Water and carbon dioxide
Oxygen and nitrogen
Glucose and nitrogen
Halloween Joke
Why didn’t the skeleton go skydiving?
He didn’t have the guts to do it
D.O.S. #44
Plants and animals are dependent on some bacteria
because these bacteria
a. Help recycle simple nutrients to the soil
b. Get energy from fermentation rather than
respiration
c. Are able to make their own food by using
energy from sunlight
d. Are engineered to remove hazardous wastes
from the environment
Joke of the Day
Two antennas met on a roof, fell in love and
got married. The ceremony wasn’t much,
but the reception was excellent.
Congrats JV Football
Go Varsity
BEAT the BOBCATS
Good Luck at Regional Cross
Country
HAPPY BIRTHDAY
Kori Hessler
(Saturday)
D.O.S. #45
Which atomic structures have the same
number of protons, but a different number
of neutrons?
a. ions
b. isotopes
c. molecules
d. none of the above
Joke of the Day
What are the dullest elements?
Bohrium and Boron
Way to Go Cross Country
• Cobra Girls Cross Country placed 4th as a
team
• Cobra Boys Cross Country placed 11th as
a team.
• Will Maraggia placed 14th with a time of 17:12 and
Katlyn Strauss placed 11th with a time of 12:42.
• Congrats to Courtney High who placed 3rd with a time of
11:54 and Cassidy High who placed 10th with a time of
12:38. Both girls will be advancing to State!
D.O.S. #46 - C
TEA STARR / EOC Release Question 1
http://www.tea.state.tx.us/WorkArea/linkit.as
px?LinkIdentifier=id&ItemID=2147503467
&libID=2147503461.
HAPPY BIRTHDAY
Selena Capak
Caitlin Ressman
Congrats Girls
Basketball
Victory over Schulenberg
last night
Announcements
• TUESDAY…. FFA Meetings – Activity
Period & 7 pm IHS Auditorium
D.O.S. #46 - P
TEA STARR / EOC Release Question 1
http://www.tea.state.tx.us/WorkArea/linkit.as
px?LinkIdentifier=id&ItemID=214750346
6&libID=2147503460
D.O.S. #47
2 or more substances that can be separated
by physical means is called:
a.
b.
c.
d.
Pure substance
Mixture
Colloid
Compound
Joke of the Day
What is the Friendliest Element?
Hydrogen
(“hi” drogen)
Physics Assignment
• Read Sections 4.1 thru 4.7 (pages 43 –
top of 53)
• Answer the questions along the way.
Yes – you need to write question and be sure
answer is a complete sentence using good spelling
and grammar
D.O.S. #48
When diluting hydrochloric acid for a lab
simulating the stomach’s digestive
system you should pour
a.
b.
c.
d.
Acid into the water
Water into the acid
Pour both simultaneously
Both a. and b.
Joke of the Day
The Electrician Said…..
“You can kill a mosquito, but you can’t Kill a
watt
(kilowatt)
Thanks Veterans
CONGRATS
2nd Team ALL DISTRICT Volleyball Team –
Darcie Moreno
1st Team District 30AA Co-MV Setter –
Makayla Lenamon
McKenna Zacek - 1st Team All District 30AA
Courtney High – 5th place at State Cross
Country. Cassidy High – 35th place
Football – way to end the season with a win
against the Sharks
DOS #49
Which scientist discovered the antibiotic
penicillin?
a.
b.
c.
d.
Einstein
Goodall
Fleming
Newton
Joke of the Day
Why did the chicken cross the road?
Isaac Newton’s First Law: Chickens at rest tend to stay
at rest. Chickens in motion tend to cross the road.
Isaac Newton’s Second Law: It was pushed on the road
with a force equal to its mass times acceleration.
Isaac Newton’s Third Law: It was pushed on the road by
another chicken, which then went the opposite direction
from the road.
Isaac Newton’s Fourth Law: It was attracted to a chicken
on the other side of the road.
D.O.S. #50 - P
The formula for speed (velocity) is?
a.
b.
c.
d.
dxt
d/t
Fxd
F/d
D.O.S. #50 - C
Chicken noodle soup is an example of:
a.
b.
c.
d.
An element
A heterogeneous mixture
A homogenous mixture
A compound
D. O. S. Checkpoint #2
Questions 26 - 50
TOMORROW – Wednesday
10/27
Thought for the Day
The difference between try and triumph is a
little umph…….
Your Attitude is a Little Thing That
Makes a BIG DIFFERENCE
D.O.S. #51
Which scientist discovered electrons using
the “Plum Pudding” Model and a cathode
ray tube?
a.
b.
c.
d.
Bohr
Thomson
Dalton
Schrödinger
Joke of the Day
What did the barrel racer do with her horse?
Rhodium
D.O.S. #52
This scientist devised the Atomic Theory
a.
b.
c.
d.
J. Dalton
D. Pavlov
S. Lothman
A. Einstein
HAPPY BIRTHDAY
Oscar Garcia
(Sunday)
JUNIORS
Bring your non-perishable food items
to my room
Between Nov. 19 – Dec. 7
Class with the most goods collected
receives an Ice Cream Party
Courtesy of Student Council
D.O.S. #53 - P
A student throws a tennis ball with a mass of
5.7 x 10-2 kg into the air. What is the
downward force on the ball due to gravity?
(where F = ma and ag = 9.8 m/s2)
a.
b.
c.
d.
9.8 N
0.56 N
0.17 N
0.057 N
D.O.S. #53
Which scientists used cathode ray tubes to
prove the presence of protons and
electrons, respectively?
a.
b.
c.
d.
Bohr and Rutherford
Goldstein and Thomson
Bohr and Thomson
Schroedinger and Goldstein
Joke of the Day
What do you get when you cross a snake
with a physicist?
A Bohr (Boa) Constrictor
GO BASKETBALL…
Girls at East Bernard
Boys at Boling
D.O.S. #54 - P
What organelle does bacteria lack that is the
housing unit for DNA?
a. Flagella
b. Golgi Apparatus
c. Nucleus
d. Lysosome
D.O.S. #54 - C
Mosely improved upon the original
arrangement of the periodic table as
developed by Mendeleev. How did
Mosely construct his version?
a.
b.
c.
d.
Alphabetically
By atomic mass
By atomic number
By year of discovery
Joke of the Day
What did the scientist say when he found
two new isotopes of helium????
HeHe
Amaze Your Family & Friends
with Thanksgiving Science
http://www.scienceoffcenter.org/science/202
-fork-balancing-an-avoid-on-thanksgivingscience-experiment-
D.O.S. #55
What are the charges of an oxygen atom
and its nucleus, respectively?
a.
0, +8
b. -2, +8
c. +8, 0
d. +16, -2
Joke of the Day
How would Sherlock Holmes have
organized the Periodic Table?
“Element TREE” (elementary),
my Dear Watson
HAPPY BIRTHDAY
Luke Smith
Go Basketball
• Boys Varsity vs. Waelder at home
• Girls at Shiner St. Paul
Canned Food Drive
• Help the needy
–
Items critically needed at this time include: canned
goods, boxed dinners, pasta, pasta sauce, baby
cereal, and baby food
• Help your class win an ice cream
party
• Deliver cans by Fri., Dec. 7
Ms. Rockstrom - sophomores
Ms. Hunt – juniors (rock)… We are currently 2nd
Mrs. Griffith - seniors
D.O.S. #56 - Chem
Which of these is the naturally occurring
isotope of Uranium?
a.
b.
c.
d.
U – 234
U – 236
U – 238
U – 239
D.O.S. #56-P
If Santa and his reindeer travel from the
North Pole to Vanderbilt (a distance of
5,000 miles) in 10 hours. What is their
velocity? (v = d/t)
a.
b.
c.
d.
50,000 mph
50,000 mph south
500 mph
500 mph south
Joke of the Day
What do you call a swim team made up of
all girls named Jennifer?
Hydro-Jens
(hydrogens)
D.O.S. #57
Define precipitate (from a chemistry
perspective)
a. Insoluble product or by-product of a
chemical reaction
b. A solvent/solute mixture
c. Rain
d. None of the above
Joke of the Day
What is a thespian’s favorite element?
Actinium
D.O.S. #58
Which branch of science combines
chemistry and biology?
a. Scientology
b. Physiology
c. Medicine
d. Biochemistry
Joke of the Day
Hydrogen and Oxygen are in a restaurant
having supper when Gold walks in….
Hydrogen yells out “Au, Get Out of Here!”
*** More News ***
• Boys…. 1st in Bloomington Tourney
– Will Maraggia…. MVP
– Jay Rubio…. All-Tournament Team
– Evan Gregg… All-Tournament Statician
• Girls – 5th in Cobra Tourney
D.O.S. #59 - P
A person taking antibiotics benefits from eating yogurt
that contains live and active bacterial cultures
because the bacteria
a. Release enzymes that prevent the reproduction of
viruses
b. May aid antibiotics by eating harmful bacteria in the
human digestive tract
c. May restore the normal community of bacteria living in
human digestive track
d. Are a major source of dietary fiber, which helps provide
energy needed to fight infection
D.O.S. #59 - C
Thanks to the work of Marie and Pierre Curie and
their associates, radioactive materials have
found a place in life saving treatments. Which
isotope is used to destroy cancer cells?
a. Americium 231
b. Carbon 14
c. Xenon 133
d. Cobalt 60
Joke of the Day
What did Godzilla say when he
ate the nuclear power plant?
EXPLOSIVE
FLAVOR
HAPPY BIRTHDAY
Marco Chavarria
Great Job Theatre and Art
• Theatre
– Matthew Bellanger - director, Chazidi
Zambrano – stage manager and techie,
Tristan Garrison… techie
– Alejandro Garza… the phantom techie
• Artists
– Shelby Martin, D J Hart
D.O.S. #60
Rank the following radioactive rays from
strongest to weakest
a.
b.
c.
d.
alpha, beta, gamma
gamma, beta, alpha
beta, gamma, alpha
beta, alpha, gamma
Joke of the Day
Old musicians never die, they just decompose
D.O.S. #61 - P
When a rock is suspended in air, it weighs 2.25 N.
In water it weighs 1.8 N. When the rock is
suspended in glycerin it weighs 1.72 N. Which
statement is true?
a.
b.
c.
d.
Water exerts a greater buoyant force on the rock than
glycerin
Glycerin exerts a greater buoyant force on the rock than
water
The buoyant force exerted on the rock in water and
glycerin and water are the same
None of the above are correct
D.O.S. #61 – Chem
What is a helium nuclei called in nuclear
chemistry?
a.
b.
c.
d.
Beta particle
Positron
Gamma ray
Alpha particle
Thought for the Day
Success Comes in Cans….
I Can
You Can
We Can
Everybody Can
HAPPY BIRTHDAY
Celia Grymes
D.O.S. #62 - P
If sample D is more basic than
sample A, but less basic
than sample C which is a
valid conclusion about the
pH of sample D?
a. pH is less than 2.4
b. pH is greater than 5.6
c. pH is between 2.4 and
11.9
d. pH is between 2.4 and
5.6
Sample
pH
A
2.4
B
11.9
C
5.6
D
D.O.S. #62 - C
What type of energy is stored in a candy
bar?
a.
b.
c.
d.
Radiant Energy
Chemical Energy
Kinetic Energy
Mechanical Energy
Joke of the Day
A horse can be ___________ to water,
but you cannot make him drink
Lead (Pb)
WELCOME
Mr. Mark Baker
Donor Recruiter Consultant
South Texas Blood & Tissue Center
*** Final Results ***
• Student Council Can Drive:
FRESHMEN: 1,584
SOPHOMORES: 640
JUNIORS: 579
SENIORS: 244
doing good for needy families in Jackson County
with 3,047 total cans
Bully Plays Cast & Crew
Follow up on STBTC Visit
• Red Cord Program for high school seniors
• Volunteer opportunities – resume support
• Chemistry – blood & tissue typing,
checking for diseases, mini-physical tests,
• Physics – centrifuge for separating 3
components of whole blood, bloodmobile
in motion, refrigeration
• Mrs. Drstata
D.O.S. #63
Donating blood provides which of the
following life saving components of
whole blood and their purpose
a. Red blood cells – to carry oxygen to tissues
and organs
b. Platelets – that provide for clotting to control
bleeding
c. Plasma – helps sustain blood pressure,
deliver proteins & enzymes
d. All of the above
Joke of the Day
What is Santa’s favorite element?
HoHoHo
(Holmium)
(submitted by Ben Rogers – 4th and Ashton Brogger – 1st)
Canned Food Delivery
Outstanding Band Students
• All Region Band
– Chazidy Zambrano
– Marco Chavarria
• Advanced from Regional’s to Area in
ATSSB all-state band auditions
– Marco Chavarria
D.O.S. #64
South Texas Nuclear is an example of
producing energy from nuclear _______
a.
b.
c.
d.
Fusion
Fission
Confusion
None of the above
Joke of the Day
Did you hear about the nuclear physicist
who went fission?
He caught 4 red fish and a flounder
(fishin’)
D.O.S. #65 - C
The time it takes for half the amount of a
radioactive material to undergo decay
a. Millennium
b. Half-life
c. Millisecond
d. Half-years
D.O.S. #65 - P
During a test of vehicle safety standards, four
different vehicles were driven at a test wall at a
velocity of 35 km/h. Which one most likely hit
the wall with the greatest force?
a.
b.
c.
d.
A bicycle
A motorcycle
A two-door sports car
A four-door SUV
Joke of the Day
I'd like to make a chemistry joke right about
now...
…..but all the good ones Argon :)
FAREWELL
BEN
We will miss you!
Good Luck
Christmas Cheer for Needy
Families
D.O.S. #66 - P
A 144 gram baseball traveling with a velocity of 45 m/sec
has the same momentum * as a 675 gram football
traveling at a velocity of:
a. 9.6 m/sec
b. 43.7 m/sec
c. 65 m/sec
d. 45 m/sec
* Momentum = m x v
D.O.S. #66 - C
Element X has two known naturally occurring isotopes. The mass
and relative abundance of each isotope are shown below
Relative Abundance
Mass (amu)
50.57%
78.92
49.43%
80.92
What is the average atomic mass of Element X to the nearest
hundredth of an atomic mass unit?
Record your answer 79.91
Joke of the Day
My date last night was boron me….
… so iodine alone tonight
(contributed by Hannah Gabrysch and Vina Nguyen)
D.O.S. #67
Which liquid has the highest viscosity?
a. Vegetable Oil
Flow Rate
(cm/sec)
15.0 cm/sec
b. Isopropyl Alcohol
32.4 cm/sec
c. Corn Syrup
d. Mineral Oil
0.73 cm/sec
1.19 cm/sec
Substance
Joke of the Day
*** SCIENCE in the NEWS ***
Astronomers were excited this week at
having isolated a brief sound
which occurred immediately before the Big
Bang.
Apparently, that sound was "uh oh."
Moment of Silence
Let us remember the students, teachers,
counselor, and principal of Sandy Hook
Elementary
HAPPY BIRTHDAY
Raven Gulledge
D.O.S. #68 - P
DNA carries instructions for making:
a.
b.
c.
d.
Photosynthesis
Proteins
Replicated cells
Offspring
D.O.S. #68 - C
Which balanced nuclear equation represents
the neutron bombardment of Plutonium to
create Lanthium and Rubidium?
a. 10n + 239 94Pu → 145 57La + 92 37Rb + 10n
b. 10n + 239 94Pu →
c. 10n + 239 94Pu →
d. 10n + 239 94Pu →
145
+ 92 37Rb + 210n
145
92
1 n
La
+
Rb
+
3
57
37
0
145
92
1 n
La
+
Rb
+
4
57
37
0
57La
Thought for the Day
Let’s have a positive week and not have any
electron clouds hanging over our heads
D.O.S. #69 - P
What would be the pressure exerted by a
55. kg woman standing on one foot in
stiletto heels with diameter of 0.75 cm?
a. 1200 N
b. 225 N
c. 73 N
d. 41 N
w = mg
P=F
A
g = 9.8 m/s2
D.O.S. #69 - PoT
What would be the volume fluid rate of a
storm water drainage ditch flowing at 2.0
m/s through a 0.91 m diameter culvert
pipe?
a. 1.3 m3 / s
b. 1.8 m3 / s
c. 2.2 m3 / s
d. 5.7 m3 / s
•
(Where V = Av)
D.O.S. #69 - C
Transition metals, noble gases, metalloids,
and non-metals are examples of
a.
b.
c.
d.
Periods of Elements
States of Matter
Element Families
None of the Above
Joke of the Day
What should a chemist do who has become
flabby?
Fermium Up
DECEMBER BIRTHDAYS
4 - Marco Chavarria
6 - Celia Grymes
17 - Raven Gulledge
23 - Colton Nagel and Devin Osburn
26 - Cade Peterek
30 - Jeffrey Koch
Test Taking Reminder
1. Take a deep breath and exhale
2. Push the frontal lobes of your
brain together to engage thinking
3. In case of panic or brain freeze,
repeat steps #1 and #2.
D.O.S. #70
Refer to the periodic table for the following:
Elements in which group on the periodic table
are least likely to form chemical bonds?
a. Noble Gases - Group 18 (far right)
b. Alkali Metals - Group 1 (far left)
c. Transition Metals – Groups 3 -12 (middle)
d. Halogens – Group 17 (right)
Joke of the Day
Who has chlorine, gold, and sulfur?
Santa ClAuS
Happy Holidays
and
Blessings to All of Your
HAPPY BIRTHDAY
Holly Pavlicek - 4
Jade Trowbridge - Today
Joke of the Day
The Element of Surprise!
120
Ah
(230)
Contributed by
Josiah Williams
HAPPY BIRTHDAY
Madison Garza
Evan Gregg
Joke of the Day
What is the dieter’s element?
Nobellium (no belly)
D. O. S. Checkpoint #3
TODAY
Questions 51 – 70
** Physics & Principles of Tech Ignore Question 10 **
** Chemistry – Ignore Question 9 **
Joke of the Day
Did you hear about the microbiologist that
was not a good swimmer?
His DNA was messed up and he almost
drowned in his own gene pool
Joke of the Day
Why does hamburger have lower energy
than steak?
Because it is in ground state
JANUARY BIRTHDAYS
Holly Pavlicek – 4
Jade Trowbridge – 7
Madison Garza & Evan Gregg – 8
Logan Robinson – 13
Miguel Ramirez – 17
Alex Biggs – 18
Randy Bitterly – 21
Savannah Cisneros – 23
Leah Bullock & Jordan Branum – 24
Shelby Martin - 29
HAPPY BIRTHDAY
Randy Bitterly – Monday
D.O.S. #71
If Baby New Year weighs 8 pounds and 6 ounces on
earth, how much will he weigh on the Moon?
a.
b.
c.
d.
8 pounds and 6 ounces
Less than 8 pounds and 6 ounces
More than 8 pounds and 6 ounces
16 pounds and 12 ounces
Joke of the Day
What is a music lover’s favorite element?
Cd
(Cadmium)
D.O.S. #72 - P
The following are examples of abiotic factors in an
ecosystem except for:
a. temperature
b. weather
c. bacteria
d. soil
D.O.S. #72 - C
Nickel is one of the transition metals.
Because of its ability to lose electrons it is
very conductive. If a nickel atom loses 2
electrons it’s charge will be
a. 1+
b. 2 +
c. 1d. 2-
HAPPY BIRTHDAY
Savannah Cisneros
Joke of the Day
I was going to make a joke about sodium
and hydrogen…..
…. But NaH
From Holly Pavlicek, A J Rojas, and && ????
HAPPY BIRTHDAY
Leah Bullock
Jordan Branum
Congrats, Shelby. Good Luck
at Houston Livestock Show
Football ALL-DISTRICT
Boys Basketball - Varsity
Girls Varsity Basketball
Houston Art Show Advancers
• Shelby Martin in Painting
• Lauren Ramon in Sculpture
UIL Results - Shiner
• Shiner UIL Invitational Meet last Thursday
evening:*
• Accounting: Courtney High 6th
• Calculator Applications: McKenna Zacek 5th in 12th grade, Jordon
Nagel 1st in 10th grade, 2nd overall, Audrey Cate 2nd in 10th grade, 6th
overall, the three of them along with Kayla Weixelman were 2nd
place team
• Computer Applications: Kayley Smith 1st, Brittany Berger 6th
• Current Issues and Events: Austin Sappington 6th
• Feature Writing: Lauren Ramon 3rd
• News Writing: Dianna Charron 4th
• Mathematics: Audrey Cate 3rd in 10th grade, James Adams 2nd in
9th grade, Cassidy High 3rd in 9th grade, Kate Crawford 4th in 9th
grade
UIL Results – Shiner (cont.)
• Number Sense: Colleen Fellers 3rd in 10th grade, Ashley Pattillo 6th
in 10th grade
• Prose Interpretation: Ethan Smith 4th
• Extemporaneous Persuasive Speaking: Ethan Smith 4th
• Ready Writing: Jessie Peterson 1st
• Science: James Adams 1st in 9th grade, Maritsa Chavarria 2nd in 9th
grade, Jessie Peterson 3rd in 10th grade, Travis Alexander 5th in 10th
grade
• Social Studies: Austin Sappington, Sydney Pattillo, April
Jungbauer and Colleen Fellers were 2nd place team
• Spelling & Vocabulary: Jordan Williams 1st, Landry Mikulec 5th,
the two of them along with Matthew Bellanger and Chazidi
Zambrano were 1st place team
UIL Results - Calhoun
Congratulations to the CX Debate team of Holly Pavlicek
and Ethan Smith for placing 2nd in the Calhoun Debate
Tournament last Saturday. They were undefeated in all
4 rounds of the debate.
******
Leah Bullock and her partner Sara Adams won 2 of their 4 rounds. Kim
Morris and partner Austin Sappington scored a win as well.
Thanks to Kevin Holdgraf for pinch-hitting on a CX Debate team at the
last minute, and never participating before… and also doing poetry
rounds. He and Brittany Gregg won 2 out of their 4 rounds, one of
those against last year’s state champion school of Boling.
D.O.S. #73
Except for helium, a full orbital of valence
electrons equals
a.
b.
c.
d.
2
4
6
8
Joke of the Day
Are you made of copper and tellerium?
Because you are very CuTe
Contributed by Caitlin Ressman, Melissa Harms, Amasty
Harms, and David Franz
HAPPY BIRTHDAY
Shelby Martin
D.O.S. #74
The elements that make the best semiconductors
for computers, phones, etc. are the a. Metals
b. Metalloids
c. Non-metals
d. Rare earth metals
Joke of the Day
Don’t listen to an atom….
… they make up everything
Contributed by Adam (Atom) J Rosas
D.O.S. #75
Which element has the greater atomic
(molar) mass?
a.
b.
c.
d.
Tin
Xenon
Mendelevium
Osmium
Joke of the Day
The Cation Exclaimed…… I’m positive that
a free electron was stripped off a me.
You’ve gotta’ keep your ion ‘em.
Houston Livestock Show
Winners
Gold – Lauren Ramon
Red – Jordin Jones, Halley Longstreet, &
Shelby Martin
White – Randy Bitterly, Selena Capak,
Madison Gloyna, Katie Grantland
SENIORS
Scholarship and Financial Aid Meeting –
TONIGHT at 6:00 pm in Library
D.O.S. #76
Calculate the dissolving rate of 5 grams of
sugar in 300 ml of water in grams per
second if it takes 2 minutes to dissolve
a.
b.
c.
d.
0.04 g/sec
2.5 g/sec
0.016 g/sec
60 g/sec
Joke of the Day
Famous physicist Werner Heisenberg was
pulled over by a policeman…..
The officer asked him if he knew how fast he
was going. Heisenberg replied, “No - I
don’t know how fast I was going, but I am
pretty sure I know where I am.”
All District Volleyball
HAPPY BIRTHDAY
Hunter Foreman
(on Sunday)
D.O.S. #77 - P
Parthenogenesis: a type of asexual reproduction in which
an organism is produced from an unfertilized egg
A female spring peeper frog produces 200 eggs through
parthenogenesis. If all the eggs hatch, they will produce
a.
b.
c.
d.
50 females and 150 males
100 females and 100 males
150 females and 50 males
200 females and 0 males
D.O.S. #77 - C
What is the electron configuration for sulfur?
a.
b.
c.
d.
1s22s22p63s23p4
1s22s22p23s23p8
1s22s22p43s23p6
1s22s23s22p63p4
Joke of the Day
What did the maitre d' say when oxygen,
hydrogen, sulfur, sodium, and
phosphorous walked into his restaurant?
OH SNaP!
Yoakum Powerlifting Meet
•
•
•
•
•
•
•
•
Boys Powerlifting Team Placed first
114’s
Jesus Rios
1st place
Bradley McGill
3rd place
123’s
Kayden Kurtz
6th place
132’s
Teton Thedford
2nd place
Rhett Musser
5th place
Boy’s Powerlifting - Yoakum
•
•
•
•
•
•
•
•
148’s
Daniel Santillan
165’s
Marco Chavarria
Kevin Holdgraf
181’s
Eli Milner
Jesse Chavarria
9th place
3rd place
10th place
2nd place
6th place
•
•
•
•
•
•
•
•
•
•
•
198’s
Jordan Branum
Dustin Hempel
Sean Bastain
220’s
Travis Alexander
Brady Vickery
242’s
Mason Davis
SHW’s
Levi Perry
3rd place
4th place
9th place
2nd place
8th place
2nd place
5th place
Yoakum Results - Girls
•
•
•
•
•
Maryssa Alvarado
Cerinity Venglar
Katriena Shaw
Amasty Harms
Haley Branum
4th place
5th place
6th place
6th place
7th place
D.O.S. #78 - P
GROUND FRESH DAILY
LEAN NATURAL GROUND BEEF
85/15
This product may contain bacteria
that can cause illness if not
handled and cooked properly
•
•
•
•
Store raw meat in freezer or fridge
Wash hands, utensils, and cutting
boards thoroughly after use
Cook meat thoroughly
Refrigerate leftovers immediately
Based on the information on the
label shown to the left, illnesscausing bacteria can survive
and multiply only –
a.
b.
c.
d.
on cutting board surfaces
for short periods of time
inside a freezer
within a specific temperature
range
D.O.S. #78 - C
Which elements have five valence electrons?
a.
b.
c.
d.
Those in Group V
Those in Group X
Those in Group XV
Those in all three of these Groups
Joke of the Day
Are you made of beryllium, gold, and
titanium?
Because you are…
BeAuTi-ful
Contributed by Logan Robinson
Welcome Kayla Nelson
D.O.S. #79
A circle graph would best communicate a
conclusion about an investigation
involving:
a. Proportions by mass of three metals in an
alloy
b. Amounts of heat released by three
chemical reactions
c. Amounts of force required to accelerate
three different masses
d. Electrical conductivity of three salt
solutions
Joke of the Day
What did one ion say to the other?
I’ve got my ion you
(eye on)
HAPPY BIRTHDAY
Brandon Garcia
D.O.S. #80
Water is called a polar molecule because:
a. Water molecules can be positively charged
and negatively charged
b. Water is known as the universal solvent
c. Water molecules have a partial positive end
and a partial negative end
d. Sugar crystals easily dissolve in water
Joke of the Day
Death Row Dummy
Way to Go CX Debaters
State Bound
Holly Pavlicek & Ethan Smith
1st in District
Leah Bullock& Sara Adams
2nd in District
Golden Cobra Band
Way to Go Solo and Ensemble
Headed to State are….
• Brass Choir
• Woodwind Choir
• Soloists – Division I rating Marco
Chavarria – Trumpet, Brock Werckle –
Trumpet, Jazmin Barns - Baritone
Headed to State Band
Carson Popp
Oscar Garcia
Marco Chavarria
Brianna Hendry
Jace Pfuhl
Cassie Luhn
Hunter Endress
Jazmin Barnes
Dee Bee Joines
Kadie Stindt
Sydney Pattillo
Marissa Hartfield
Bubba Garcia
Hunter Goyen
Ashley Pattillo
Ray Henry
Matthew Bellanger
Brian Landry
Brendon Miller
Cerenity Venglar
Serina Salazar
Celeste Tellez
Chazidy Zambrano
Audrey Cate
Students who will be taking Dual-Credit
courses for the 2013-2014 school year will
need to attend a MANDATORY
Orientation meeting hosted by Victoria
College TONIGHT Feb. 11th at 6:00 pm in
the high school library. At least one parent
and their student must attend.
D.O.S. #81
The most reactive family of elements with an
oxidation number of 1+ is:
a.
b.
c.
d.
Alkali Earth Metals
Rare Earth Metals
Alkali Metals
Transition Metals
Joke of the Day
Why are the Country Music team of Brooks
and Dunn no longer together?
They dissolved their partnership (or they
split – like an atom)
HAPPY BIRTHDAY
Crisna Baez
NOTE to ALL WHO LEAVE
NOTEBOOKS in ROOM
Take your notebooks with you or put them
on bookcases so custodians can spray
with disinfectant.
D.O.S. #82
Carbon dioxide, hydrochloric acid, and sulfur
trioxide are major air pollutants. These
compounds are formed as byproducts from the
combustion of fossil fuels. The bonds between
these elements are called _________ and
form by ________________
a. Ionic, transferring electrons
b. Ionic, sharing electrons
c. Covalent, transferring electrons
d. Covalent, sharing electrons
Joke of the Day
Why did Carbon and Hydrogen get married?
They bonded the moment they met
D.O.S. #83
A plant has a change in its DNA that makes it
more resistant to a species of harmful bacteria.
What will most likely happen as a result of this
mutation?
a. The plant will not survive long enough to reproduce
b. The species of harmful bacteria will become extinct
c. Over time the number of harmful bacteria will
increase
d. Over time the number of resistant plants will
increase
Joke of the Day
When Archimedes got up out of the bath
and noticed how much water had spilled
out of the tub, he said, "I've got to get out
of displace!"
D.O.S. #84 - P
It takes a power lifter 4.0 seconds to lift a barbell
1.5 meters. He exerts a force on the barbell of
1500 newtons. About how much power does
the power lifter use to lift the barbell? (where P
= W/t and W = F x d)
a.
b.
c.
d.
375 watts
563 watts
2250 watts
9000 watts
D.O.S. #84 - C
See TEA sample Chemistry EOC questions. Problem 6 on
page 4
http://www.tea.state.tx.us/student.assessment/staar/testquestions/
Joke for Valentine’s Day
An electron is courting an atom and keeps
orbiting around the atom to get it's
attention.
Exasperated from all the attention, the atom
asks, "Why do you persist in running these
circles around me?"
In reply the electron says, "I'm strangely
attracted to you."
Two 4 Thursday Joke
You'd be great as my Valentine…
…….I'm attracted to you, so please don't
repel me
HAPPY BIRTHDAY
Kayden Kurtz
Treats in Honor of all our February Birthday People –
Hunter Foreman (2/3), Brandon Garcia (2/7),
Crisna Baez (2/12), and Austin Sappington (2/17)
D.O.S. #85
Refer to the periodic table for the following:
Elements in the far left groups (Groups 1 & 2)
on the periodic table are most likely to form
chemical (ionic) bonds with which group?
a. Noble Gases - Group 18 (far right)
b. Metalloids – parts of Groups 13, 14, 15, &
16 (left)
c. Transition Metals – Groups 3 -12 (middle)
d. Halogens – Group 17 (right)
Joke of the Day
Why did the white bear dissolve in water?
Because it was a polar bear
HAPPY BIRTHDAY
Austin Sappington
(Sunday 2/17)
Needville UIL Results
• Accounting: April Jungbauer 2nd
• Calculator Applications: Jordon Nagel 2nd, together with Audrey
Cate and Morgan Gabrysch 2nd place team
• Computer Science (written): Luke Dvorak 4th
• Feature Writing: Vina Nguyen 3rd
• News Writing: Dianna Charron 2nd, Haley Wood 3rd, Vina Nguyen
4th
• Headline Writing: Haley Wood 5th
• Literary Criticism: Kyle Fikes 2nd, Lorrin Kuntz 5th
• Ready Writing: Jessie Peterson 4th
• Social Studies: Austin Sappington 4th, together with April
Jungbauer and Colleen Fellers 2nd place team
• Spelling & Vocabulary: Jordan Williams 1st, Audrey Cate 2nd, Jace
Pfuhl 4th, together with Chazidi Zambrano 1st place team
PowerLifting – Industrial Meet
IHS Boys…. First Place
•
114’s
Jesus Rios 1st place- also Outstanding Lifter for the lite platform 114-165
Kayden Kurtz 4th place
Bradley McGill 5th place
•
123’s
Trenton Thedford 1st place
•
132’s
Daniel Santillan 5th place
Rhett Musser
•
165’s
Marco Chavarria 2nd place
Ethan Brown 4th place
Kevin Holdgraf
•
181’s
Jordan Branum 1st place
Eli Milner 2nd Place
Jesse Chavarria 4th place
Boys PowerLifting
• 198’s
Shawn Bastian 4th place
Devon DelosSantos 7th place
• 220’s
Dustin Hempel 1st place
Travis Alexander 2nd place
Brady Vickery 5th place
• 242’s
Mason Davis 1st place
• SHW
Levi Perry
Girls Powerlifting – Industrial Meet
IHS Girls – 6th Place
• 123’s
Haley Branum 3rd Place
• 181’s
Maryssa Alvarado, 3rd Place
Cerenity Venglar, 4th Place
Amasty Harms, 5th Place
D.O.S. #86
Which question cannot be answered by
experimentation using a scientific approach?
a. Does hot water freeze faster than cold water?
b. Will wearing a copper bracelet reduce arthritis
symptoms?
c. Do roses smell better than carnations?
d. Will popcorn kernels soaked in water produce a
greater volume of popped corn than dry kernels?
Joke of the Day
What is a cation afraid of?
A dogion
D.O.S. #87
Cohesion is the tendency of water molecules to:
a.
b.
c.
d.
Push apart
Stick together
Stick to other polar substances
None of the above
Joke of the Day
Why was a mole of oxygen excited when
she walked out of the bar?
She got Avogadro's number!
D.O.S. #88 - P
Why is a ship with a hollow steel hull able to float
in seawater?
a. Ship displaces a volume of seawater that weighs
more than the ship
b. Density of steel is greater than the density of
seawater
c. Buoyant force on the ship is less than the weight of
the ship
d. Buoyant force on the ship is less than the weight of
the seawater displaced by the ship
D.O.S. #88 - C
What is an example of a diatomic molecule?
a.
b.
c.
d.
Na
Silver
SO4
Cl2
Joke of the Day
What is a can’s favorite sport?
Tin-is
(tennis)
Congrats Girls Golf
• Hannah Gabrysch – tied for First
place individual
• 1st place team
D.O.S. #89
Lightening has an enormous amount of
energy since it is composed of plasma.
The state of matter called plasma exists
in which temperature range?
a.
b.
c.
d.
Less than 100 oC
Over 100,000 oC
Between 100 oC to 1,000 oC
In any of these
Joke of the Day
What is the Funniest Element?
He-He-Helium
Contributed by Amnasty Harms
D.O.S. #90
CaCl2 is a salt used for making cheese, deicing highways, drilling mud additive, waste
water treatment , and many other everyday
applications. What is the preferred formula
for this binary ionic compound?
a.
b.
c.
d.
Calcium Dichlorine
Monocalcium Dichloride
Calcium Chloride
Calcium Cholorodide
D.O.S. Checkpoint #4
Monday, February
th
25
Questions 71 - 90
Joke of the Day
Sign on the Electric Company’s Marquee
“We would be delighted if you pay your bill.
However, if you don't, you will be”
De-lighted
End of DOS’ to date in 2012 - 2013
Thought for the Day
You don’t really understand
something until you can
explain it to your grandmother
-- Albert Einstein
Joke of the Day
Q: What's the difference between a
mathematician and an experimentalist?
A: A mathematician thinks that two points
are enough to define a straight line while
an experimentalist wants more data.
Thought of the Day
Success Takes Purpose, Planning,
Practice, and Patience
Joke of the Day
How Physics Saves Lives
Joke of the Day
The Native American Tale of the
Pythagorean Theory
Joke of the Day
How do you know a banana is sunburned?
It peels
Joke of the Day
The Scientists and God
Joke of the Day
What are a tailor’s favorite elements?
Sodium (sew)
Mendelevium
Joke of the Day
What is Mickey Mouse’s favorite element?
Plutonium
Joke of the Day
What do you get if you chop an avocado into
6.022 x 1023 pieces?
Guaca-MOLE
Joke of the Day
The Learning Pill
Joke of the Day
Some say chemists are the salt of the earth,
others would disagree
Joke for the Day
Someone stole the letter between Q and S.
How do you know?
Argon (“R” gone)
Joke of the Day
What is Dorothy and Toto’s Favorite
Element?
Osmium
(Oz)
Joke for the Day
What is a friend’s favorite element?
Paladium
Joke of the Day
What did the Food Critic say?
Iodine at only the best restaurants
Joke of the Day
Why didn’t the skeleton go sky diving?
He didn’t have the guts to do it
Joke of the Day
If Estonia, Latvia, and Lithuania are the
Baltic States… Then Germany, Poland,
Sweden, and Finland must be the
COBALTIC states
Joke of the Day
What does DNA stand for?
National Dyslexics Association
Joke of the Day
What is PoO8 and why is it important?
To Polon-ate plants and flowers
…whoops - it really would be called
polonium octoxide if it could exist
Joke of the Day
Chemists can be Pb to H2O,
but you can’t make them drink
Lead
Joke of the Day
What did the bug say when he hit the
windshield of a car?
I will never have the guts to do that again
Joke of the Day
What element do moles love to study in
chemistry?
Molybdenum
D.O.S. Checkpoint #4
Questions 66 – 85
TOMORROW – Tues., 2/14
Joke of the Day
Why do chemists like nitrates so much?
They are cheaper than day rates
Joke of the Day
Anyone know any jokes about sodium?
Na
D.O.S. #94
The numbers in the chemical formula
2Na(CO3) represent:
a.
b.
c.
d.
Moles, Superscript
Coefficient, Subscript
Coefficient, Moles
Superscript, Subscript
Joke of the Day
What is a baker’s favorite element?
Fluorine (flour-ine)
Joke of the Day
What are a merchant’s favorite elements?
Selenium or Sulfur
D.O.S. #95
Which of the following coefficients balance
this equation?
___ Fe + ____ O2  ___ Fe2O3
a.
b.
c.
d.
4, 3, 2
2, 3, 1
1, 3, 2
2, 0.6, 1
D.O.S. #96
Which statement about solution chemistry is true?
a.
b.
c.
d.
Solvents and solutes are the same
Solutes dissolve solvents
Solvents dissolve solutes
None of the above
Joke of the Day
Why is organic chemistry so hard?
It takes alkynes of studying
Thought for the
Day
Joke of the Day
A wise man knows what’s watt
Joke of the Day
Two chemists walk into a restaurant. Being
clever, the first orders some H2O. The
second one says, “That sounds good. I’ll
have some H2O too.”
The Second Chemist Died
HOW? H2O too = H2O2 (hydrogen peroxide)
D.O.S. #100
How much power is exerted by a 50 N
boy running 100 meters in 5
seconds? (where P = W/t and W = F
x d)
a.
b.
c.
d.
2.5 watts
550 watts
1000 watts
25,000 watts
D.O.S. #101
Which of the factors listed are limiting
factors in an ecosystem?
a.
b.
c.
d.
Food and water
Space
Shelter
All of the above
Joke of the Day
What is the funniest element in prison?
Silicon
(Silly convict)
Joke of the Day
If sound does not travel in a vacuum, then
why are vacuums so noisy???????
D.O.S. #103
Thermal pollution occurs when human activities
cause the temperature of lakes and rivers to
rise. Why are fish most likely to be harmed by
long-term thermal pollution of the water in
which they live?
a. The solubility of oxygen in the water decreases
b. The solubility of carbon dioxide in the water
increases
c. The solubility of fertilizers, such as potassium
chloride will decrease in the water
d. The solubility of quartz crystals will increase in the
water
Thought for the Day
Teachers open the door, but you must enter
the door by yourself
-- Ancient Chinese Proverb
The solubility of which
compound is impacted
the most by increasing
temperature?
a.
b.
c.
d.
KBr
NaClO3
NaCl
KNO3
Grams solute/100 g H2O
D.O.S. #104
D.O.S. Checkpoint #5
Questions 86 – 105
TOMORROW – Wed., 4/11
D.O.S. #105
Why does a carbonated drink stay bubbly before
the cap is removed from the bottle?
a. Because the liquid temperature is warmer than the
surrounding conditions, which keeps the carbonated
gas in solution
b. That’s what carbonation means. Duh.
c. Since the liquid molecules weigh more they keep
the bonded gases in solution
d. Because pressure remains higher inside a closed
container, which increases the solubility of the
carbon dioxide gas
Joke of the Day
What is the friendliest acid?
HI - hydroiodic
Joke of the Day
Evan asked the cat sitting next to him if he
had any Sodium Hydrobromite
And he said, “NaBrO”
Joke of the Day
How do you eat DNA spaghetti?
With a Replication Fork
Joke of the Day
• It’s amino world without chemists
• Translation: It’s a mean old world without
chemists
YOU DID IT!
TAKS is OVER
For some it may be your last FOREVER
Joke of the Day
What did the momma volcano say to the
baby volcano?
I lava you
The following slides are duplicates or
unused stuff from 2011 – 2012
D.O.S. #98
Given:
Sugar
Rolled Oats
2 cups
3 cups
432 grams
258 grams
If the volume ratio of the sugar to the rolled oats (oatmeal)
measured is 2 to 3, what is the mass ratio expressed
in whole numbers when measured in grams?
a.
b.
c.
d.
2 to 3
5 to 3
3 to 2
3 to 5
Tongue-in-Cheek
Thought for the Day
6 Phases of a Project
1. Enthusiasm
2. Disillusionment
3. Panic
4. Search for the Guilty
5. Punishment of the Innocent
6. Praise and Honors for the Non-Participants
Let’s keep the 6 Steps of Scientific Method instead
Thought of the Day
Winners find ways to make things work.
Losers find excuses
as to why things don’t work.
The solubility of which
compound is
impacted the least
by increasing
temperature?
a.
b.
c.
d.
KBr
NaClO3
NaCl
KNO3
Grams solute/100 g H2O
D.O.S. #105
Joke of the Day
Miss Jones’ 2nd Grade Class
Joke of the Day
What kind of shoes do robbers where?
Sneakers
Joke for the Day
An Engineer, a Physicist, and a
Mathematician are Staying in a Hotel….
Thought of the Day
Curious people ask questions…
…Determined people find answers
Joke of the Day
What is the Funniest Element?
He-He-Helium
Joke of the Day
What do you do with dead chemists and
chemistry teachers?
Barium
D.O.S. #34 – C, P
If a person is 6’-3” tall, how tall are they in
meters?
a. 191 m
b. 1.91 m
c. 16.0 m
d. 1.60 m
Joke of the Day
What do doctors do with sick people?
Joke of the Day
A proton, an electron, and a neutron went to
dinner….
D.O.S. #43
The scientist who devised the first periodic
table was
a. Democritus
b. Dalton
c. Mosely
d. Mendeleev
Joke of the Day
If a tailor’s favorite element is Sodium, what
is a tailor’s second favorite element?
D.O.S. #46
How do you determine the number of
neutrons in an atom?
a.
b.
c.
d.
Equals the number of protons
Equals the number of electrons
Atomic mass minus number of protons
Atomic mass divided by number of protons
D.O.S. #47
Which ions carry a negative charge?
a.
b.
c.
d.
Anions
Cations
Protons
Electron
Joke of the Day
What did Carbon-14 wear when it got cold
outside?
D.O.S. #51
The nucleus of an atom contains which 2
subatomic particles?
a.
b.
c.
d.
Neutrons and protons
Neutrons and electrons
Protons and electrons
None of these
D.O.S. #56
How many groups are there on the periodic
table?
a.
b.
c.
d.
1
7
12
18
Joke of the Day
What did the Lone Ranger say to his horse?
HIOAg
Joke of the Day
What is a ship captain’s
least favorite element?
Zinc
Joke of the Day
CSI Vanderbilt ~
The body of a man was discovered in the
gym today….
Joke of the Day
Why don’t scientists make great pet
owners?
D.O.S. #71 – IPC & PTEC
Which of the following are examples of corrosive
materials?
a. Battery Acid – pH 2
b. Baking Soda – pH 9
c. Glycerin – pH 7.3
d. Gasoline – pH 6.8
Thought for the Day
D.O.S. #74
The Noble Gases follow which rule:
a.
b.
c.
d.
Octet
Newtonian
Algebraic
Playground
Thought for
the Day
D.O.S. #85
How many neutrons does mercury have?
a.
b.
c.
d.
12
80
201
121
D.O.S. #87
Which of these are states of matter?
a.
b.
c.
d.
Gas
Liquid
Solid
All of These
D.O.S. #89 - Chem
How many valence electrons does Carbon
have?
a.
b.
c.
d.
1
2
4
8
D.O.S. #91
The formula for speed (velocity) is?
a.
b.
c.
d.
dxt
d/t
Fxd
F/d
Joke of the Day
Mathematician: Pi r squared
Baker: No! Pies are round, Cakes are square!
HAPPY
π DAY
3.14.2011
D.O.S. #96
Research shows taking aspirin or medicines containing salicylate
compounds during recovery from a viral infection (such as the flu)
can cause a potentially deadly disease of the brain and liver
called Reyes Syndrome. Which over the counter medicine is
considered unsafe while recovering from a viral infection?
a. Multisymptom cold medicine with Doxylamine Succinate,
Dextromethrophan Hydrobomide, Acetaminophen,
Pseudoephedrine Hydrochloride
b. Motion sickness tablet containing dimenhydrinate
c. Chewable antacid tablet with Famotidine, Calcium Carbonate,
and Magnesium Hydroxide
d. Medicine for upset stomach with active ingredient Bismuth
Subsalicylate
D.O.S. #97
Which type of bonds do metals and nonmetals form?
a.
b.
c.
d.
Metallic
Ionic
Covalent
Multiple
D.O.S. #98
Tuberculosis is a contagious disease that usually
occurs as an infection of the lungs. Symptoms
include persistent cough, fever, fatigue, night
sweats, and unexplained weight loss. TB is
most likely transmitted by
a.
b.
c.
d.
Mosquito bites
Blood transfusions
Through the air
Through the water
D.O.S. #100
One gram of protein has an energy value of about
4 Calories. An athlete wants to increase the
percentage of Calories from protein in his diet.
Which one of these would have the greatest
percentage of Calories from protein?
a. An energy bar with 19 g of protein and 210
Calories total
b. An energy bar with 14 g of protein and 200
Calories total
c. An energy bar with 16 g of protein and 230
Calories total
d. An energy bar with 20 g of protein and 280
Calories total
D.O.S. #38
The amount of a substance that
contains 6.022 x 1023 particles (one
mole) of that substance was named
in honor of which famous scientist?
a.
b.
c.
d.
Green
Newton
Avogadro
Fleming
D.O.S. #105
A gardener lifts a bag filled with compost. If the
bag has a mass of 36 kilograms, what is the
minimum amount of work the gardener must
do to lift the bag to a height of 0.5 meter?
a. 36.5 J
b. 72.0 J
c. 176.4 J
d. 352.8 J
Joke of the Day
What did one electron say to the other who
was having a bad day?
Don’t get excited. You’ll work yourself into a
state.
D.O.S. #109
Which is a measure of energy?
a.
b.
c.
d.
Joule
Watt
Neither A or B
Both A and B
D.O.S. #113
April 22 commemorates:
a. Earth Day across the world
b. US Naturalist and Sierra Club Founder
John Muir’s birthday who helped
preserve the California redwood trees
c. Proud Science Nerd & Teacher Miss
Hunt’s birthday
d. All of the above
Joke of the Day
What do you get when you cross an ester of
plastic with a hare?
The Ester Bunny
NOTE
The following DOS questions are in the pool
to be used.
They have not been used in current school
year as of yet
D.O.S. #32
Given:
Sugar
Rolled Oats
2 cups
3 cups
432 grams
258 grams
If the volume ratio of the sugar to the rolled oats (oatmeal)
measured is 2 to 3, what is the mass ratio expressed
in whole numbers when measured in grams?
a.
b.
c.
d.
2 to 3
5 to 3
3 to 2
3 to 5
D.O.S. #96
The pH of acid rain a. Less than 5.6
b. 7.0
c. Greater than 12.9
d. Between 5.6 – 12.9
D.O.S. #98
What is the formula to convert mass to weight,
where g is acceleration due to gravity?
a. F = m + g
b. F = m - g
c. F = m/g
d. F = mg
D.O.S. #102
Golden-cheeked warblers are an endangered species of
bird that nests only in Central Texas. They nest in ash
juniper trees and feed on spiders and insects. Brownheaded cowbirds sometimes lay eggs in the warblers
nests. Blue jays are known to eat young birds –
including golden-cheeked warblers.
The survival of golden-cheeked warblers would be
threatened by an increase in the
a. Spread of a virus fatal to blue jays
b. Predation of cowbirds by red-tailed hawks
c. Clearing of ash juniper trees for farm and ranch land
d. Local spider population due to mild winters
D.O.S. #104
What is the primary name for the ionic compound
CaCl2?
a.
b.
c.
d.
Dichlorine calcium
Chlorinated calcium
Calcium dichloride
Calcium chloride
D.O.S. #107
Adhesion is the tendency of water molecules to:
a.
b.
c.
d.
Push apart
Stick together
Stick to other polar substances
None of the above
D.O.S. #108
Histamine is a polar chemical that can lead to an allergic response
when it is released by the body’s immune system. Antihistamines
are drugs that can help prevent allergic reactions associated with
histamines. Antihistamines molecules are similar to those of
histamines in size, shape, and polarity. How does an
antihistamine most likely prevent the effects of histamine?
a.
b.
c.
d.
Increases diffusion of histamine across membranes of target
cells
Binds to histamine receptors on the surfaces of target cells
Causes target cells to increase production of histamine
receptors
Blocks histamine receptors found in the cytoplasm of target
cells
D.O.S. #109
Students traveling to South Padre Island for Spring
Break can average 130 k/h. If the distance
from IHS to their hotel on the beach is 585 k,
how long will it take them?
a.
b.
c.
d.
4.5 hours
2 hours
6 hours
They should stay home with mom and dad
and not go to South Padre Island for Spring
Break
D.O.S. #110
Which is a key concept of an ecosystem?
a. Energy can be recycled
b. All food chains and food webs begin with
carnivores
c. Feeding relationships can be shown in a
food web, which consists of interconnected
food chains
d. Arrows in food chains and food web
diagrams always point from the consumer to
the organism that is consumed
D.O.S. #111
What does the heavy bold line on the right
hand side of the periodic table indicate?
a. Separates radioactive and nonradioactive elements
b. Separates metals and non-metal
elements
c. Separates acids and bases
d. What bold line?
D.O.S. #114
Which of these body systems is directly
responsible for maintaining the health and
fighting off disease?
a.
b.
c.
d.
Immune system
Muscular system
Skeletal system
Excretory system
D.O.S. #115
Hydrogen and nitrogen gas react in a sealed container kept at a
constant temperature as shown in the equation below. The
pressure in the container is less at the end of the reaction
than at the beginning.
3H2(g) + N2(g)  2NH3(g)
What is the most likely reason the pressure decreased?
a. Fewer atoms at the end of the reaction than the
beginning
b. Fewer molecules at the end of the reaction than the
beginning
c. Mass of reactants is less than mass of products
d. Volume of reactants is less than the volume of products
D.O.S. #116
Metabolism is defined as:
a. Fat burners
b. Poisoning of the body from excess
minerals and vitamins
c. Chemical reactions that take place in
an organism
d. Spread of disease within a plant or
animal community
D.O.S. #118
How much power is exerted by a 50 N
boy running 100 meters in 5
seconds? (where P = W/t and W = F
x d)
a.
b.
c.
d.
2.5 watts
550 watts
1000 watts
25,000 watts
D.O.S. #120
A vacuum is:
a. A mechanical device used to
redistribute dust
b. A region with no matter in it
c. A sealed room
d. None of the above
D.O.S. #121
An object will move when the net force
on it is:
a.
b.
c.
d.
A factor of 2 greater than gravity
Equal to zero
Equal to force of gravity
Greater than zero
D.O.S. #124
A student starts with a heat
source in each solution.
He removes heat probe SoluInit
Temp Temp
and then measures
changes in temperature tion Temp After After
5
10
for various solutions at
5 minute intervals.
mins mins
What is wrong with his
H2O 60oC 55oC 50oC
data collection?
a. There is no control
KI
70oC 65oC 65oC
b. Solutions are too
different
c. Should have
measured to nearest AgNO3
oC 72oC 65oC
80
0.1 degree
d. Nothing
D.O.S. #125
When water freezes, partial charges line up
(positive to negative), forming a
crystalline structure. This pattern causes
molecules to spread slightly apart. What
is the result?
a. Snow flakes form and travel slowly to earth
b. Ice will be less dense than water, so it floats
c. Ice clings to the edges of surfaces such as
lakes, so it floats
d. Ice and snow are good solvents for
antifreeze
D.O.S. #126
Total energy in a system is?
a. Potential energy plus kinetic energy
b. Potential energy minus kinetic energy
c. Potential energy divided by kinetic
energy
d. Potential energy multiplied by kinetic
energy
D.O.S. #127
A molecule of DNA is shaped like:
a.
b.
c.
d.
An oval
A pair of dumb bells
A twisted ladder
A set of stairs
D.O.S. #130
The efficiency of a real machine:
a. Cannot exceed 100%
b. Is calculated as a ratio of force output
to force input
c. Is measured in watts
d. Is the same as mechanical advantage
Last D.O.S. test of the school year
(covers questions #118 - #131)