Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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| 1. | Which of these is
the fairest way to find out if sand or silt will settle faster when mixed with
water?
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| 2. |
A student uses the equipment
shown above to study which liquid is the thickest. What information is the most appropriate to
record?
a. | The height of each of the
graduated cylinders | b. | The time it takes for each marble to hit
bottom | c. | The size and mass of each of
the marbles | d. | The volume of each of the
liquids in the cylinders | | |
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| 3. | A scientist needs
to take a picture of the well-ordered arrangements of the atoms and molecules within a substance.
Which of the following instruments would be best for the scientist to
use?
a. | a laser light with
holograph | c. | an electron microscope | b. | a seismograph | d. | a stereoscope | | | | |
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| 4. | Sarah wants to
know if her hermit crabs prefer sunlight or shade. What is the best way for her to find
out?
a. | Place her hermit crabs in a
box between the sunlight and shade and see which way they crawl. | b. | Place her hermit crabs in the sunlight and see if they move to the
shade or stay in the sunlight. | c. | Place her hermit crabs in the shade and see if they move toward the
sunlight or stay in the shade. | | |
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| 5. | Which of the
following is the best way to investigate the effect of fertilizers on tomato
plants?
a. | Put several plants outdoors
and several indoors. | b. | Add fertilizer to several plants and change the amount of water given
to each. | c. | Grow several plants under the
same conditions, but change the amount of fertilizer added to each. | d. | Grow several plants under various temperature conditions, but keep the
amount of fertilizer the same for each. | | |
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