Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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What
is the square root of 12?
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2.
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What
is 2 + 3?
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3.
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To
search for answers to questions, you can a. | do research. | c. | do an experiment. | b. | make
observations. | d. | All of the
above | | | | |
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4.
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Which
of the following is NOT an SI unit? a. | meter | c. | liter | b. | foot | d. | degree
Celsius | | | | |
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5.
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A lab
has the safety icons shown below. These icons mean that you should wear
a. | only safety goggles. | b. | only a lab
apron. | c. | safety goggles and a lab apron. | d. | safety goggles,
a lab apron, and gloves. | | |
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6.
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Which
of the following is a limitation of models? a. | They are large enough to see. | b. | They do not act
exactly like the things they model. | c. | They are smaller than the things they
model. | d. | They use familiar things to model unfamiliar
things. | | |
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7.
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A
pencil is 14 cm long. How many millimeters long is it? a. | 1.4
mm | c. | 1,400
mm | b. | 140
mm | d. | 1,400,000
mm | | | | |
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8.
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If
the results don't support a hypothesis, then scientists may a. | repeat their
investigations and check for mistakes. | b. | ask new questions. | c. | form new
hypotheses. | d. | All of the above | | |
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9.
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Which
of these scientists studies how humans interact with their environment? a. | a
cartographer | c. | an environmental
scientist | b. | an engineer | d. | a biologist | | | | |
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10.
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What
is the basic SI unit for mass? a. | pound | c. | kilogram | b. | ounce | d. | cubic
meter | | | | |
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11.
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Scientists communicate the results of an investigation in order to a. | share
information. | c. | collect
data. | b. | make a hypothesis. | d. | make an observation. | | | | |
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12.
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A
scientific law a. | tells why
something happens. | b. | is a summary of many experimental results and
observations. | c. | says the same thing will happen most of the
time. | d. | is the same as a theory. | | |
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13.
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Which
of the following is a physical model? a. | a model made of equations and data | b. | a
map | c. | the system to
classify living things | d. | a model that allows you to calculate how much you would weigh
on the moon | | |
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14.
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Which
of the following statements about the law of universal gravitation is NOT true? a. | It says that
every object in the universe is attracted to every other object. | b. | It helps you
calculate the size of the attraction. | c. | It says that the size of the attraction depends on the masses
of the objects and the distance between them. | d. | It explains why
there is an attraction. | | |
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15.
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The
only way to measure the effectiveness of a mathematical model is to compare its prediction
with a. | physical
models. | c. | computer
simulations. | b. | actual events. | d. | established theories. | | | | |
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16.
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Which
of these is closest in length to a centimeter? a. | the length of a person's foot | c. | the thickness of a dime | b. | the diameter of
a dime | d. | the length of a
football field | | | | |
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17.
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Which
of the following is NOT true about scientific methods? a. | The steps must
be used in order. | b. | Communicating results is one of the
steps. | c. | All branches of science use them. | d. | Making guesses
is part of the process. | | |
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18.
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Which
unit would be most appropriate for expressing the mass of a cow?
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19.
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A
____ is a possible explanation or answer to a question. a. | hypothesis | c. | theory | b. | prediction | d. | variable | | | | |
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20.
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After
forming a hypothesis, you should a. | test your hypothesis. | c. | analyze the results. | b. | ask a
question. | d. | draw
conclusions. | | | | |
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21.
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Analyzing the results of your experiment can be a. | obtaining data
from your experiment. | b. | organizing your data into tables and
graphs. | c. | doing calculations to learn more about your
results. | d. | Both (b) and (c) | | |
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22.
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To
search for solutions to problems such as global warming, scientists would most
likely a. | measure the
Earth's temperature. | c. | create a
mathematical model. | b. | construct a physical model. | d. | Both (a) and (c) | | | | |
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23.
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To
find a reliable answer to a question or problem, scientists use a. | the scientific
method. | c. | their
creativity. | b. | their imagination. | d. | All of the above | | | | |
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24.
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Which
of the following statements is a testable hypothesis? a. | Dinosaur bones
have been found in New Mexico. | b. | The bones found in New Mexico came from a dinosaur unknown to
science. | c. | The new dinosaur bones do not match any others
known. | d. | Known dinosaur bones are compared with the new ones
found. | | |
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25.
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A(n)
____ is a statement of cause and effect that can be used to set up a test for a
hypothesis. a. | prediction | c. | conclusion | b. | premonition | d. | observation | | | | |
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26.
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Scientists try to design experiments that will clearly show whether a particular ____
was the cause of an outcome. a. | observation | c. | factor | b. | hypothesis | d. | conclusion | | | | |
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27.
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In
order to be certain about the conclusions of an experiment, scientists should a. | keep the number
of samples in both the control group and the experimental group small. | b. | do the
experiment only once. | c. | have many more individuals in the experimental group than in
the control group. | d. | do the same experiment many times. | | |
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28.
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When
scientists find that a hypothesis is not supported by the tests they perform, they realize
that a. | the experiment
was a waste of time. | b. | they did the experiment wrong. | c. | they have
eliminated one possible factor. | d. | they must perform the experiment again until it works out the
way they think it should. | | |
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29.
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Scientists communicate results by a. | giving lectures. | b. | publishing
results in scientific journals. | c. | announcing the results of their investigation at a press
conference. | d. | All of the above | | |
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30.
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How
many meters are in a kilometer?
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31.
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What
does the prefix milli- mean?
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32.
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One
liter is equal to a. | 1
cm3. | c. | 1,000
mL. | b. | 0.01
m3. | d. | All of the
above | | | | |
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33.
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The
distance from New York City to Los Angeles would best be expressed using a. | kilometers
(km). | c. | centimeters
(cm). | b. | millimeters (mm). | d. | decimeters (dm). | | | | |
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34.
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The
basic SI unit of length is the a. | meter (m). | c. | kilogram (kg). | b. | liter
(L). | d. | Kelvin
(K). | | | | |
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35.
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The
volume of an object can be calculated by a. | adding the length plus the width plus the
height. | b. | subtracting the width from the length and
height. | c. | multiplying the length by the width by the
height. | d. | dividing the length by the width by the
height. | | |
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36.
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Which
tool would you select to measure the volume of a liquid? a. | a
ruler | c. | a
thermometer | b. | a graduated cylinder | d. | a balance | | | | |
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37.
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Which
tool would you select to measure the volume of a block of wood? a. | a
ruler | c. | a
thermometer | b. | a graduated cylinder | d. | a balance | | | | |
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38.
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You
have a graduated cylinder that contains 50 mL of water. You drop a fossil into the cylinder, and the
water level rises to 65 mL. What is the volume of the fossil? a. | 15
cm3 | c. | 50
cm3 | b. | 115 cm3 | d. | 65 cm3 | | | | |
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39.
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Which
tool would you select to measure the mass of a rock? a. | a spring
scale | c. | a graduated
cylinder | b. | a balance | d. | a ruler | | | | |
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40.
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Your
mass would most likely be described using a. | pounds. | c. | kilograms. | b. | milligrams. | d. | kilometers. | | | | |
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41.
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When
energy is transferred to an object, its ____ increases. a. | mass | c. | temperature | b. | weight | d. | All of the above | | | | |
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42.
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The
official SI unit for temperature is a. | the Kelvin (K). | c. | degrees Celsius (°C). | b. | degrees
Fahrenheit (°F). | d. | All of the
above | | | | |
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43.
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Normal body temperature is a. | 32°F. | c. | 37°C. | b. | 32°C. | d. | 37°F. | | | | |
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44.
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To
answer the question, "How hot is a lava flow?" you would measure the
lava's a. | temperature. | c. | volume. | b. | mass. | d. | length. | | | | |
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45.
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The
Empire State Building is 381,000,000 mm tall. This measurement would more likely be expressed as a. | 381
mm. | c. | 381
m. | b. | 381
cm. | d. | 381
km. | | | | |
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46.
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Which
of the following is a step of scientific methods? a. | ask a question | c. | draw conclusions | b. | test a
hypothesis | d. | All of the
above | | | | |
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47.
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Which
of the following would most likely be studied by a paleontologist, such as David D.
Gillette? a. | earthquakes | c. | cave
formations | b. | volcanoes | d. | fossils | | | | |
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48.
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Which
of the following would make maps of Earth's features? a. | an
ecologist | c. | a
cartographer | b. | a meteorologist | d. | a geochemist | | | | |
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49.
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Geologists recorded the mass of five rock samples. The masses were 15 g, 25 g, 20 g,
30 g, and 35 g. What was the average mass of the rock samples? a. | 20
g | c. | 25
g | b. | 23
g | d. | 125
g | | | | |
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50.
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Hundreds of years ago, people measured objects by using a. | barley
grains. | c. | a global
measurement system. | b. | body parts. | d. | Both (a) and (b) | | | | |
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51.
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The
volume of which of the following objects would you express in milliliters? a. | a drop of ocean
water | c. | a dinosaur
skeleton | b. | a dime | d. | a volcano | | | | |
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52.
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A
crate has a bottom of 16 m2 and a height of 3 m. What is the volume of the
crate? a. | 3
m3 | c. | 16
m3 | b. | 4 m3 | d. | 48 m3 | | | | |
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53.
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If
you conclude that your results do NOT support your hypothesis, you a. | should check
your results or calculations for errors. | b. | should redo the test, changing the
variable. | c. | may have to modify your hypothesis and conduct another
test. | d. | Both (a) and (c) | | |
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54.
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If a
tested hypothesis does not produce the expected results, a. | the experiment
was a waste of time. | b. | don't trash the results–it might lead to another
discovery. | c. | the experiment was done wrong. | d. | manipulate the
data to fit the hypothesis. | | |
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55.
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If it
is not possible to construct a controlled experiment in order to test a hypothesis,
you a. | can still
perform the experiment, hoping that the non-controlled factors will not interfere with the
results. | b. | should give up and find a different problem to
solve. | c. | might build a model which allows you to control all the factors
and then test your hypothesis. | d. | should manipulate the data from a non-controlled experiment to
fit the results you would have expected from a controlled experiment. | | |
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56.
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After
collecting data, a scientist should a. | form a hypothesis. | c. | analyze the results. | b. | communicate the
results. | d. | draw
conclusions. | | | | |
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57.
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Which
of the following best describes a theory? a. | an educated guess | b. | a representation
of an object or system | c. | a unifying explanation for a broad range of hypotheses and
observations that have been supported by testing | d. | None of the
above | | |
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58.
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Scientific knowledge changes and grows due to a. | asking new
questions and reexamining old ones. | b. | the use of new technologies. | c. | the discovery of
new information. | d. | All of the above | | |
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59.
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A
large quartz crystal is added to a graduated cylinder containing 80 mL of water, raising the level to
90 mL of water. What is the volume of the quartz? a. | 10 cm3 | c. | 90 mL | b. | 80
cm3 | d. | 90
cm3 | | | | |
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60.
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If
you were to write two thousand mockingbirds in SI units, it would be a. | 2
kilomockingbirds. | c. | 2
millimockingbirds. | b. | 2 nanomockingbirds. | d. | 2 megamockingbirds. | | | | |
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61.
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To
describe the length of a grain of rice, you would use a. | millimeters
(mm). | c. | meters
(m). | b. | decimeters
(dm). | d. | kilometers
(km). | | | | |
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62.
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The
measure of how much surface an object has is its a. | length. | c. | density. | b. | volume. | d. | area. | | | | |
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63.
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The
International System of Units a. | is based on standardized body
measurements. | b. | contains units that are based on the number
10. | c. | is also known as
the English system. | d. | was invented in China. | | |
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64.
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Which
of the following would NOT be considered a model? a. | a weather map | c. | a boat | b. | a
computer-simulated car crash | d. | a toy
car | | | | |
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65.
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Scientific models a. | represent scientific ideas and
objects. | b. | use familiar things to help describe unfamiliar
things. | c. | have limitations. | d. | All of the
above. | | |
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66.
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Stopwatches, rulers, and computers are all ____ that are used to collect data during
an experiment. a. | prototypes | c. | tools | b. | models | d. | observations | | | | |
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67.
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The
three main parts of a compound light microscope are a. | an ocular lens,
an objective lens, and a hand lens. | b. | a stage, a light, and a tube with
lenses. | c. | a lens, a slide, and a light. | d. | an ocular light,
an objective light, and a radiant light. | | |
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68.
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If
you use a microscope to observe an object that is 0.2 mm long under 100´ magnification,
how large will the object appear to be? a. | 0.2 mm | c. | 20 mm | b. | 2
mm | d. | 200
mm | | | | |
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69.
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You
have a microscope that magnifies 500´. The object you are looking at appears to be 25 mm long. How
long is it really? a. | 0.05 mm | c. | 20 mm | b. | 5
mm | d. | 25
mm | | | | |
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70.
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The
area of an object is calculated by a. | adding the length to the width. | b. | subtracting the
width from the length. | c. | multiplying the length by the width. | d. | dividing the
length by the width. | | |
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71.
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What
is the area of a square with sides measuring 5 meters? a. | 5
m2 | c. | 15
m2 | b. | 10 m2 | d. | 25 m2 | | | | |
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72.
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A
rectangle has an area of 36 cm2 and a length of 9 cm. What does its width
measure? a. | 9
cm | c. | 45
cm | b. | 4
cm | d. | 324
cm | | | | |
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