Transcript Document

Earth Science CRCT 3
2008
• 1. What is located beneath soil layers?
A. Bedrock
B. Humus
C. Lava
D. Tundra
2. You are preparing for an experiment in which
you will use a Bunsen burner to heat a substance.
Which of the safety symbols below would you most
likely see in the directions for this experiment?
A
C
B
D
• 3. Which of the following SI units would a
scientist use to express the mass of an
object?
•
•
•
•
A liters
B kilograms
C cubic meters
D meters
• 4. When dense, cold air pushes beneath warmer
atmospheric air, the lighter, warmer air rises. As this air
rises into the atmosphere, it cools and some of the water
vapor in it condenses.
Which of the following will most likely form as this
occurs?
A. a cloud
B. a rainbow
C. a sunset
D. a tornado
• 5. What must a scientist always be sure
of?
• A that observations meet expectations
• B that records of observations are
accurate
• C that observations are supported by
opinions
• D that observations prove that a
hypothesis is true
• 6. Which of the following physical
properties does a graduated cylinder
determine?
• A the density of an object
• B the mass of an object
• C the volume of an object
• D the temperature of an object
• 7. Which of the following types of models
is based on making comparisons with
familiar things to help illustrate or explain
an idea?
• A conceptual models
• B climate models
• C physical models
• D mathematical models
• 8. Wind power is not typically used to generate all of
the electricity needed for large cities because the —
• A. energy source is inconsistent.
B. waste products are unsafe.
C. fuel expenses are too great.
D. energy produced is not in a usable form.
9. Which step belongs at point A in
the flowchart of scientific methods?
• A Present the
Findings
• B Organize the Data
• C Construct a Theory
• D Test the Hypothesis
• 10. A hurricane that hits the coast of the
southeastern United States is most likely formed
in the
• A. Pacific Ocean near Hawaii.
B. Atlantic Ocean off the New England coast.
C. equatorial region of the Atlantic Ocean.
D. in the Arctic Ocean north of Canada.
• 11. For frost to be on the grass in the
morning, the water vapor in the air must
• A. evaporate and freeze.
B. boil and condense.
C. condense and freeze.
D. boil and evaporate.
• 12. Extrusive rocks have small grains because they
—
• A. cool quickly.
B. harden underground.
C. contain rare minerals.
D. have a rough mixture.
• 13. How have mathematics and technology
changed the way scientists create models?
• A Scientists can create models that prevent
natural catastrophes.
• B Scientists can create models that make exact
predictions about the future.
• C Scientists can create models from large
amounts of data from many different variables.
• D Scientists can create models that no longer
require them to use scientific methods.
• 14. Kate is building a model of the solar system.
She chooses a basketball to represent Earth.
She wants her model to represent the relative
sizes of all the planets and the Moon accurately.
•
Which of the following should Kate use to
represent the Moon?
• A. a marble
B. a Ping-Pong ball
C. a softball
D. a soccer ball
• 15. Janet designed an experiment to determine
whether the depth of water in a container had an
effect on how quickly the water evaporated. In
order to carry out her experiment, which variable
would Janet need to change?
• A. the amount of water in the container
B. the width of the container
C. the location of the container
D. the material the container is made of
• 16. The Earth's surface can change either quickly or
slowly. Which of these can happen when rocks and
soil in the Earth move suddenly?
A. Landslides
B. Tornadoes
C. Hurricanes
D. Blizzards
• 17. Which natural force creates surface
ocean currents?
A. gravity
B. sunlight
C. earthquakes
D. wind
• 18. Marty learned that a planet's orbital velocity
is related to its distance from the Sun. He noted
that orbital velocities range from 4.7 km/sec
(Pluto) to 47.8 km/sec (Mercury). Which planet is
likely to have an orbital velocity of 5.4 km/sec?
A. Venus
B. Earth
C. Mars
D. Neptune
• 19. When does the scientific community
accept the results of a scientific
experiment?
• A when other scientists have carefully
reviewed the completed experiment
• B before the results of an experiment have
been communicated
• C after a hypothesis has been developed
• D during data gathering
• 20. A comet is largely made up of
• A. iron and nickel.
B. rock.
C. petroleum.
D. water and ice.
• 21. Which of the following most likely results in the
formation of a fossil?
A. A Mesozoic clam lies exposed on the surface of the
sea floor.
B. A Mesozoic clam is washed up onto the beach.
C. A Mesozoic clam is eaten by a large predatory fish.
D. A Mesozoic clam is buried by a mudslide.
• 22. Why do scientists sometimes communicate
different results about the same topic?
• A Not all scientists use scientific methods.
• B The results of scientific experiments can never
be reproduced.
• C Scientists support only their own opinions.
• D Scientific data can be interpreted in different
ways.
• 23. What do scientists do when the results
of an experiment do not support a theory?
• A Scientists conduct further experiments.
• B Scientists reject the results of the
experiment.
• C Scientists reject the theory.
• D Scientists change the scientific method.
• 24. Which of these statements about Earth's
crust is true?
• A. It is a layer of solid rock that remains the
same throughout time.
B. It includes the continents, but not the ocean
floor.
C. It is a changing, moving surface with the
same thickness everywhere.
D. It is a system of large masses called plates
that slowly move together or apart.
25. Which of these will cause the
greatest high tides?