Transcript Four Corners

Four Corners
Unit 1 Test Review Game
The Rules
Four Corners Game - How to Play
 Team A vs. Team B
 One team stands - 15 seconds to choose A, B, C, D.
 Each member standing in the right corner = 1 point
 Don’t know the answer? Break up the team (ex. could be A or B? split up!)
 10 seconds to return to seat or it is minus 1 point per person standing PENALTY FLAG!
 Winning team = PRIZE :)
DON’T BE A SHEEP!
TEAM A
The hinge shown below is used as a model
of the elbow joint.
Which feature of the model would be most
important to understanding how the elbow
joint works?
a.
how the hinge moves
b.
how wide the hinge is
c.
what color the hinge is
d.
what the hinge is made of
TEAM B
The diagram below represents a molecule of water.
The circles represent atoms, and the lines
represent bonds.
What is the correct term for this diagram?
a.
experiment
b.
observation
c.
visual model
d.
computer model
TEAM A
Scientists use computer models to study how black holes form in space. What is the most likely
reason a computer model is being used?
a.
Black holes do not actually exist.
b.
Black holes are too small to study.
c.
Black holes are too large to study.
d.
Black holes are too far from Earth.
TEAM B
A model of an atom is shown. This model is used by chemists when studying a
due to its simplicity.
odel of an atom is shown below. This model is used by chemists when studying atoms due to its simplicity.
What is the most important reason that scientists find this model useful?
a. It explains how atoms behave and their internal structure.
b. It is not based on observations.
c. It was been developed over a long time.
d. It was simple to construct and easy to understand.
What is the most important reason that scientists find this model useful?
a. It explains how atoms behave and their internal structure.
b. It is not based on observations.
c. It was been developed over a long time.
d. It was simple to construct and easy to understand.
TEAM A
The current model of the atom looks different from the one shown below.
What most likely caused scientists to develop a new model of the atom?
a.
Scientists became more creative.
b.
Scientists made new observations.
c.
The particles in atoms were observed.
d.
The structure of atoms changed over time.
TEAM B
Four balls of different masses were dropped from the same height. The table shows how long it took each
ball to reach the ground.
Ball Drop
Ball
Mass Time
A
200 28
B
300 26
C
400 22
D
500 20
Which of the following could be a correct label for the second column?
a.
Total mass
b.
Mass of the ball
c.
Mass (g)
d.
Mass (s)
TEAM A
The table below shows the high temperature and the low temperature in Miami during 1 week.
Daily Temperatures in Miami
Day
Low temperature (°C) High temperature (°C)
Monday
23
31
Tuesday
25
28
Wednesday
26
33
Thursday
24
33
Friday
26
32
On which day was there the least difference between the low temperature and high temperature?
a.
Monday
b.
Tuesday
c.
Thursday
d.
Friday
TEAM B
The figure below shows a computer model of the basic structure of
DNA, which is the material that determines the physical
characteristics of living things.
DNA is made up of millions of tiny subunits. So, each straight “bar” in
the model is actually made up of several smaller pieces. Which of
these statements describes a limitation of this model?
a.
The model is too large to be used easily.
b.
The model does not show all parts of DNA.
c.
The model is too small to be used easily.
d.
The model is more complicated than it needs to be.
TEAM A
A scientist uses a computer to make a model of DNA, the
genetic material that determines physical characteristics in
living things. DNA is found inside the cells of living things. The
model looked like the figure below.
Which of the following is a reason that a scientist would want to
use a model to study DNA?
a.
DNA does not really exist.
b.
DNA is dangerous to living things.
c.
DNA is very rare.
d.
DNA is too small to see without magnification.
TEAM B
Scientists can use many strategies during investigations, including fieldwork, surveys, models,
and experiments. Which of these phrases describes an experiment?
a.
mathematical description of a process
b.
observation of animals in their natural world
c.
collection of data from an uncontrolled environment for comparative purposes
d.
procedure with controlled conditions and test and outcome variables
TEAM A
Researchers often conduct scientific experiments as part of an investigation. Good
experiments follow organized procedures. Which of these phrases describes another
characteristic of a good scientific experiment?
a.
uncontrolled surroundings
b.
results that can be replicated
c.
small sample size for collecting data
d.
variable procedures for obtaining data
TEAM B
Early astronomers made valid discoveries by observing the night sky with simple telescopes.
Which statement applies to these early discoveries?
a.
Not all scientific knowledge about the night sky comes from experiments.
b.
Data from modern telescopes has disproved early observations of the night sky.
c. Observations of the night sky with simple telescopes are not enough to make valid
discoveries.
d. Discoveries about the night sky were not made until astronomers used complicated
scientific equipment.
TEAM A
During a scientific investigation, which step will a scientist perform first?
a.
Collect and organize data.
b.
Plan the experimental procedure.
c.
Define the problem for investigation.
d.
Defend conclusions drawn from data.
TEAM B
Scientific investigations include many different steps. During a scientific investigation, which
step occurs after a scientist collects data?
a.
Draw conclusions.
b.
Form the hypothesis.
c.
Plan the experiment.
d.
Follow the procedure.
TEAM A
Which scientific investigation does not include outcome and test variables?
a.
counting bird populations
b.
studying the effect of temperature on bacterial reproduction rates
c.
investigating the effect of mass on the speed at which an object falls
d. testing a model car in a wind tunnel to minimize air flow resistance and maximize fuel
economy
TEAM B
Which description defines an experiment?
a.
prediction of something that will happen
b.
observation of results from uncontrolled events
c.
development of a testable explanation of an event
d.
procedure applied systematically under controlled conditions
TEAM A
Which of these answers best describes a scientific theory?
a.
an explanation based on the opinion of a scientist
b.
a well-supported and widely accepted explanation of nature
c.
a description of a specific relationship under given conditions
d.
a statement describing what always happens under certain conditions
TEAM B
Which of these answers describes a scientific law?
a.
an interesting idea based on various scientific opinions
b.
a well-supported and widely accepted explanation of nature
c.
a specific relationship under given conditions in the natural world
d.
an explanation of why particular events happen in the natural world
TEAM A
Coraline examined a figure similar to the one below. The figure
below illustrates Boyle’s law, which describes the effect of pressure
on the volume of a gas that is kept at constant temperature.
Coraline’s teacher gave her four statements to review. Based on the
figure, which of these statements is an accurate explanation of
Boyle’s law?
a.
Boyle’s law explains why the volume of a gas gets smaller when
the pressure on a gas is increases.
b.
Boyle’s law explains what happens to a gas if the temperature
of the gas is changed.
c.
Boyle’s law identifies the relationships among temperature,
pressure, and volume for gases in a closed system.
d.
Boyle’s law states that, as the pressure on a certain amount of
gas increases, its volume decreases.
TEAM B
Which of these statements best describes how scientific ideas change?
a.
Debate and consensus among scientists leads to modification of ideas.
b.
Scientific ideas rarely change, because they based on extensive evidence.
c.
As a scientific idea changes, it eventually becomes a scientific theory and then a law.
d.
Scientists form opinions based on evidence and decide how the idea should change.
TEAM A
Simon is presenting a project on scientific law and scientific theory to the class. Which of the
following statements should he include to explain the differences between the two?
a.
Scientific theory requires scientific evidence and scientific law does not.
b.
Scientific theories are based on observations and scientific laws are based on opinions.
c. Scientific theory explains why something happens, and scientific law describes what
happens.
d.
Scientific theories are rarely changed, but scientific laws are modified fairly frequently.
TEAM B
The figure below shows atomic models.
Which of these statements about the figure is most likely
correct?
a. The atomic model has changed very little over
time.
b. As scientists learned more, they modified the
atomic model.
c. Scientists are still debating which of the three
theories is right.
d. Scientists have three different ideas about what
atomic structure looks like.
study tonight from your journal, and classwork:
Theory vs. law and an example of each
Replication vs. repetition
Why can’t a theory become a law?
3 branches of science
Independent vs. dependent variable