Transcript Practice EOG

Practice EOG
8th Grade Science
Students will need a calculator and periodic table of elements!
Which source of water pollution
includes oil and gasoline discharge
from automobiles and storm sewer
drainage?
1.
2.
3.
4.
Agriculture
Bacteria
Sedimentation
Urban runoff
6%
03%
%
91%
1
2
3
4
This drawing represents an airplane flying over
the ocean, carrying equipment that measures
characteristics of the ocean. The equipment
produces two kinds of laser beams that react
differently when they come into contact with
the ocean’s surface and the ocean floor.
What does this form of technology measure?
91%
3%
6%
0%
1.
2.
3.
4.
Water depth
Water temperature
pH levels of water
Dissolved oxygen in water
This chart describes an experiment using a
sample of water and three solids made of
different substances. Which property of
1. Solubility water is being tested?
2. Cohesion
3. Polarity
4. Buoyancy
24%
0%
12%
64%
1
2
3
4
Which best explains the importance
of dissolved gases in the ocean?
1.
They help control
pollution.
2. They help provide oxygen
for aquatic animals.
3. They help maintain a
constant water
temperature.
4. They help maintain
constant levels of salinity.
100%
0%
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3
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4
Which best describes a bioindicator?
1.
A species that has a
short life span
2. A species that
depends on specific
conditions to survive
3. A species that can
adapt to a variety of
conditions
4. A species that has
been introduced to an
ecosystem
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4
How can the atmosphere be
considered part of the hydrosphere?
1. It is a source of water.
2. It blocks ultraviolet rays from
the sun.
3. It contains the oxygen
necessary for life on Earth
4. It traps pollutants that would
otherwise harm the earth.
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0%
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3
0%
4
What characteristic of aluminum allows
it to be made into aluminum foil?
1.
2.
3.
4.
It is dense.
It is soluble.
It is magnetic.
It is malleable.
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4
What pure substance is composed
of more than one element?
0%
0%
0%
0%
1.
2.
3.
4.
Carbon
Gold
Water
Sodium
Which factor best explains why some
people will develop cancer and others
will not after being exposed to the same
high levels of a harmful chemical?
1. Concentration of the
chemical
2. Potency of the chemical
3. Individual susceptibility to
the chemical
4. Individual exposure to the
chemical
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4
After a chemical reaction occurs in an open
test tube, measurements indicate that the
mass of the reactants is greater than the mass
of the products remaining in the test tube.
What most likely explains the
measurements?
1. A gas was produced.
2. A solid was produced.
3. The salinity of the
reactants was high.
4. The temperature of
the reactants was low.
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0%
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3
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4
Which is the best way to determine
if an object is made of pure silver?
1. Determine the solubility of
the object
2. Test to see if the object is
chemically reactive
3. Determine the density of the
object and compare the
known density of pure silver
4. Compare the mass of the
silver object to the mass of a
piece of pure silver
0%
1
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4
The shaded areas of this diagram represent
where fossils of a land-dwelling animal were
found on the continents of South America and
Africa. What does this evidence suggest?
1.
2.
3.
4.
The animals swam from one
continent to the other.
The two continents were
once connected by a land
bridge.
The animals developed on
the two continents at the
same time.
The two continents were
once joined as part of a
larger continent.
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4
A layer of marine fossils is discovered
in a desert environment. Which
hypothesis best explains the
discovery?
1.
The area was once
covered by water.
2. Volcanic activity once
occurred in the area.
3. A catastrophic event once
occurred in the area.
4. Erosion turned most of
the limestone in the area
into sand.
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3
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4
Fossils of warm-weather plants were found
on an island in the Arctic Ocean. What can
best be concluded from this discovery?
1.
2.
3.
4.
Spores of plants drifted by air
currents to the island.
Ocean currents carried the
plants to the island.
The island drifted from a
tropical region to its present
location.
Seeds of plants have been
carried to the island by
migratory birds.
0%
1
2
3
4
Which is best used to track the global
movement of volcanic ash after an
eruption?
0%
0%
0%
0%
1.
2.
3.
4.
Ground truthing
Satellite photographs
Topographic maps
Weather balloons
Which theory best describes how an
asteroid striking Earth may have caused
the extinction of dinosaurs?
1.
2.
3.
4.
Heat from the asteroid caused massive
fires that reduced the food supply.
Dense clouds formed following the
collision, causing a global drop in
temperature.
Land masses were altered by the
collision, reducing the space where
dinosaurs could roam for food.
Glaciers melted rapidly from heat
produced by the asteroid, causing
floods that destroyed dinosaurs’
habitats.
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1
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4
Which statement best explains the
reason muscle cells have more
mitochondria than skin cells?
1.
Muscle cells use more
energy than skin cells.
2. Muscle cells have fewer
proteins than skin cells.
3. Muscle cells have a smaller
nucleus than skin cells.
4. Muscle cells have more
excess water than skin
cells.
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3
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4
What is the role of cytoplasm in a
living cell?
1.
2.
3.
4.
Fight infections
Digest proteins
Surround organelles
Pass on genetic
information
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This chart shows the worldwide number of
measles cases over twenty years. Which is
most likely the cause of the decline in
measles cases from 1980 to 1990?
0%
0%
0%
0%
1.
2.
3.
4.
Antibiotics
Chemotherapy
Quarantines
Vaccinations
How are parasites and viruses similar?
1. Both are
contagious
diseases.
2. Both infect host
organisms.
3. Both reproduce
using host cells.
4. Both break down
food using oxygen.
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0%
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3
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4
Which describes a nonpoint source of
pollution?
1.
Accumulation of oil in a
stream next to a gasoline
station
2. Chemical spill in a river
next to a manufacturing
complex
3. Runoff from a road into
a nearby stream
4. Liquid fertilizer flowing
from a barrel into a
stream
0%
1
2
3
4
1.
2.
3.
4.
Which statement best explains the
reason some insects can walk across
the surface of a lake?
Water is a polar molecule, and its
adhesiveness causes good capillary
action.
Water is a non-polar molecule, and
its cohesiveness causes good
capillary action.
Water is a polar molecule, and its
cohesiveness causes high surface
tension.
Water is a non-polar molecule, and
its high adhesiveness provides high
surface tension.
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4
Seasonal tourism can cause a shortage of the
freshwater supply in some coastal areas. This
can then cause coastal communities to
purchase water from other sources. What does
this situation describe?
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1.
2.
3.
4.
Economic trade-off
Excess nutrient input
Point source pollution
Environmental stewardship
Which interaction illustrates a terrestrialaquatic food web relationship?
1. A bear eating fish
in a river
2. A turtle burying
eggs in the sand
3. A fish eating
plankton in the
ocean
4. A bird laying eggs
in a nest in a tree
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0%
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3
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4
What does the hardness of water
indicate?
1. High levels of calcium
and magnesium
2. Low levels of calcium
and magnesium
3. Increased pressure in
pipelines to faucets
4. Decreased pressure in
pipelines to faucets
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4
Water temperature and depth of water are
factors that can determine the type of
organisms that live in different areas of
the ocean. Which other factor in most
important?
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1.
2.
3.
4.
Currents
Tides
Sediments
Sunlight
How does exposure to cigarette smoke
contribute to an asthma attack?
1. By decreasing
blood pressure
2. By causing
mutations in cells
3. By irritating the
respiratory tract
4. By reducing insulin
levels
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What makes fertilizers a benefit to the
farming industry?
1.
2.
3.
4.
They increase the
nutrients in soil.
They increase the growth
of helpful bacteria.
They decrease the chance
of bacteria growing in
the soil.
They decrease the chance
of plants being eaten by
insects.
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0%
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0%
4
1.
2.
3.
4.
Which is a naturally occurring
chemical?
Aspirin
Salt
Plastic
Nylon
0%
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4
Which element is a poor conductor of
heat?
0%
0%
0%
0%
1.
2.
3.
4.
F
K
Fe
Ag
This table shows the specific heat of four
substances. If each substance is exposed to the
same amount of energy for one minute, which
substance will get the hottest?
0%
0%
0%
0%
1.
2.
3.
4.
Lead
Iron
Glass
Ice
A beaker with 100mL of water is placed
on a hot plate and heated. The water
boils at 100oC. At what temperature
would 90 mL of water boil?
1.
2.
3.
4.
10oC
90oC
100oC
110oC
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4
This diagram shows a cross section of land that
has not been overturned and includes a fossil.
What can be concluded about the age of the
fossil?
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0%
0%
0%
1.
2.
3.
4.
It is younger than the shale.
It is older than the shale.
It is older than the sandstone.
It is younger than the sandstone.
1.
2.
3.
4.
Which best explains how geologic time
scales can help scientists study the
evolution of life on Earth?
They describe the existence of
rocks before there was life on
Earth.
They show that geological
features have evolved at the
same rate as organisms.
They compare the life histories
of species that have used rocks
as habitats.
They correlate the existence of
life on Earth with geological
events.
0%
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4
Which statement supports the theory
of evolution?
1.
All living cells come
from previous cells.
2. All plants and animals
have DNA.
3. Matter cannot be created
or destroyed during
chemical reactions.
4. Fossils provide evidence
that vertebrates share a
common ancestor.
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4
How can satellite imagery best be
used after a hurricane hits the coast?
1.
To check nearby lake
depths
2. To identify the amount
of beach erosion
3. To determine the
location of sea turtles’
nests
4. To map topography
inland of the coastal
region
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4
How are plant and animal
cells similar?
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1.
2.
3.
4.
They both have flagella.
They both have a nucleus.
They both have an eyespot.
They both have chloroplasts.
This diagram shows a Euglena and a
Paramecium. Euglena and Paramecium
are similar in which way?
0%
1.
2.
3.
4.
Both are types of plans.
1 2 3 4
Both have a cell wall to maintain their structure.
Both have structures that aid them in movement.
Both must produce their own food in order to live.
Some women who took the drug
thalidomide in early pregnancy gave birth
to children with severe birth defects.
Which is thalidomide considered to be?
1.
2.
3.
4.
Antibiotic
Mutagen
Vaccine
Virus
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This chart shows the growth of bacteria over
a period of 10 hours. Which graph best
illustrates the growth of the bacteria?
1.
a
4.
2. B
0%
3. C
1
1. d
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4
What is one way scientists analyze the
health of a river?
1. By measuring its depth
2. By measuring the speed
at which the river flows
3. By measuring its
dissolved oxygen
content
4. By measuring the
distance the river travels
to reach an ocean
0%
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2
3
4
Which example best represents an
interconnection between an aquatic food
web and a terrestrial food web?
1. Fish eat insects that
land on the surface of
a pond.
2. Snakes eat bird eggs.
3. Bats eat mosquitoes.
4. Mountain lions catch
and eat deer.
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0%
0%
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3
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4
What is one way the government of the
United States attempts to reduce
pollution in the oceans?
1. Create new
desalination plants
2. Discontinue sewage
treatment programs
3. Increase oil and
gasoline production
4. Enforce laws limiting
trash dumping
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4
Where is the majority of Earth’s
freshwater located?
0%
0%
0%
0%
1.
2.
3.
4.
Clouds
Pacific Ocean
Polar ice caps
Rivers
The population density of marine life is greater
along the shorelines of the ocean than farther out in
the deep waters of the ocean. Which statement
provides the best reason for this situation?
1. Ocean currents prevent many smaller
marine organisms from living in deep
water.
2. The shallow waters have fewer
predators.
3. Coastal waters are less polluted than the
deeper waters of the ocean.
4. There are more nutrients in shallow
waters.
0%
1
2
3
4
Which technology best monitors
temperature changes in Earth’s oceans?
1.
2.
3.
4.
Radar
Satellites
Sonar
Microwave
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3
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4
Chemical X has a mass of 5 grams, and
chemical Y has a mass of 10 grams. If the
two chemicals are mixed and a complete
chemical reaction takes place, what is
most likely the mass of the product?
1.
2.
3.
4.
0%
5 grams
10 grams
15 grams
50 grams
1
2
3
4
Which best describes a way to reduce
a person’s exposure to pesticides?
1. Put leftovers in the
refrigerator
2. Do not eat bread that has
mold growing on it
3. Make sure meat is
thoroughly cooked before
eating it
4. Wash fruits and vegetables
before eating them
0%
1
2
3
4
How can a scientist, using the periodic
table, find an element with properties
similar to another element?
0%
0%
0%
0%
1.
2.
3.
4.
By comparing density
By finding its periodic group
By comparing malleability
By comparing atomic weight
Why were some pesticides such as
DDT removed from public use?
1. They can cause
heart disease.
2. They can cause
diabetes.
3. They can cause
meningitis.
4. They can cause
cancer.
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1
0%
0%
2
3
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4
The element silicon is best used for
which purpose?
1.
As a container to
keep coffee hot
2. As a semiconductor
in computer chips
3. As a material to make
airplane frames
4. As a malleable
material for coins and
jewelry
0%
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4
Which is an example of a
physical change?
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1.
2.
3.
4.
Boiling
Burning
Rotting
Rusting
The theory of global warming is based
on an increase of what atmospheric
gas?
1.
2.
3.
4.
0%
Carbon dioxide
Helium
Hydrogen
Oxygen
1
2
3
4
The Mid-Atlantic Ridge exists between the
African and South American geologic plates.
Which process most often occurs at the MidAtlantic Ridge?
1. Destruction of
underwater mountains
2. Creation of new
continents
3. Subduction of geologic
plates
4. Spreading of sea floor
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3
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4
A scientist has a hypothesis that a large volcanic
eruption caused a change in global temperature.
Which information gained from ice cores is most
useful in supporting the scientist’s hypothesis?
1.
Levels of dissolved
oxygen
2. Identities of trace
metals
3. Estimates of natural
radioactivity
4. Amounts of
atmospheric dust
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Which is the best method for
verifying data gathered by satellites?
0%
0%
0%
0%
1.
2.
3.
4.
Ground truthing
Reflectance curves
Satellite imagery
Spectral analysis
Information about the heredity
of a cell is stored in which
organelle?
1.
2.
3.
4.
Flagellum
Mitochondrion
Nucleus
Vacuole
0%
1
2
3
4
1.
How is the cell membrane important to
the process of osmosis?
It allows water to move into
the cell.
2. It allows all materials from the
outside environment to move
into the cell.
3. It traps water and nutrients
that would otherwise be
unable to move into the cell.
4. It collects nutrients from
water in the outside
environment and moves them
into the cell.
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3
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4
Which is most likely responsible
for the formation of cancer cells?
1.
2.
3.
4.
An antibiotic
A mutagen
A bacterium
A parasite
0%
1
2
3
4
Which project is most likely to interest a
scientist working at a biotechnology
company?
1.
Study and reconstruction
of fossilized bones
2. Conservation of key
species within ecosystems
3. Development of
genetically modified corn
plants
4. Prevention of sewage
leaking into water supplies
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0%
2
3
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4
You’re Done!!
Your EOG Score
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• Convert your RAW score into your SCALE
score using the chart below
Use your Scale Score…
• Find out if you got a 1, 2, 3 or 4 on your practice
EOG.
• Use this data to decide what your strengths and
weaknesses are in science class.
• Use that information to help guide you in your
EOG preparation.