Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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Accuracy is judged by
a. | how close a value is to the true value. | b. | the precision of the
tool used for measurement. | c. | the reputation of the
scientist. | d. | None of the above |
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2.
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According to the graph above, how long does
it take this car to travel 270 kilometers?
a. | 6 hours | c. | 12 hours | b. | 9 hours | d. | 15 hours |
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3.
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According to the graph above, what is the
dependent variable?
a. | Distance (km) | c. | Cannot be determined | b. | Time (h) | d. | Speed |
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4.
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According to the graph above, what is the
independent variable?
a. | Distance (km) | c. | Cannot be determined | b. | Time (h) | d. | Speed |
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5.
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According to the graph above, what does the
slope indicate?
a. | time/distance = speed | c. | Cannot be
determined | b. | distance/time = speed | d. | distance/time = acceleration |
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6.
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How many significant figures are in 70,200?
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7.
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Which of the following shows 0.0000043 g?
a. | 4.3 ´ 107 g | c. | 4.3 ´ 10–6 g | b. | 4.3 ´
106 g | d. | 4.3 ´ 10–7 g |
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8.
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The main branches of natural science are
a. | physics and chemistry. | b. | biology, zoology, and
ecology. | c. | medicine and agriculture. | d. | life, physical, and Earth
science. |
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9.
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What do scientists who do pure science do?
a. | They look for ways to use scientific knowledge to solve problems. | b. | They develop new
uses for scientific knowledge. | c. | They do experiments to find out about the
world. | d. | They build faster and more powerful computers. |
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10.
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A scientific law is
a. | the same as a hypothesis. | b. | a description of a natural
event. | c. | an explanation of a scientific observation. | d. | the conclusion of a
scientific experiment. |
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11.
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According to the graph, for which year was the smallest number of
pennies found?
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12.
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Scientists test a hypothesis by
a. | formulating questions. | c. | doing experiments. | b. | designing models. | d. | drawing
conclusions. |
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13.
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Maria is 123 centimeters tall. Her height in meters is
a. | 0.0123 m. | c. | 1.23 m. | b. | 0.123 m. | d. | 12.3 m. |
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14.
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Maria is 123 millimeters tall. Her height in meters is
a. | 0.0123 m. | c. | 1.23 m. | b. | 0.123 m. | d. | 12.3 m. |
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15.
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Which SI prefix means one one-hundredth (1/100)?
a. | nano- | c. | milli- | b. | micro- | d. | centi- |
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16.
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A loaf of bread weighs 1,362 g. The weight in kilograms is
a. | 1.362 kg. | c. | 0.1362 kg. | b. | 1,362 kg. | d. | 0.01362 kg. |
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17.
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The speed of light is approximately 3 ´
108 m/s. How would this be written in conventional notation?
a. | 300,000 m/s | c. | 30,000,000 m/s | b. | 3,000,000 m/s | d. | 300,000,000 m/s |
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18.
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You are asked to find the volume of a cube that is 2.5 cm high, 2.65 cm wide,
and 3.456 cm long. How many significant figures should you show in your answer?
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19.
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A measurement that is accurate is one that
a. | is as exact as possible. | b. | is close to the true value. | c. | contains at least
four significant figures. | d. | contains five decimal
places. |
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20.
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An important science skill is critical thinking. This means
a. | thinking logically to solve a problem. | b. | discovering the shortcomings of
others. | c. | knowing when something is very important. | d. | testing a hypothesis
during an experiment. |
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21.
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A tool used by physicists to smash atoms is a
a. | spectroscope. | c. | particle accelerator. | b. | stopwatch. | d. | radio telescope. |
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22.
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The two main branches of science are
a. | physics and chemistry. | c. | natural and physical science. | b. | natural and social
science. | d. | biological and
Earth science. |
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23.
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A scientific theory is an explanation that
a. | has been published in a journal or book. | b. | predicts what will
happen. | c. | has been tested by many observations. | d. | a scientist has tested with an
experiment. |
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24.
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For a scientific theory to be valid, it must allow you to
a. | perform experiments. | c. | form a hypothesis. | b. | obtain new results each
time. | d. | make
predictions. |
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25.
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A scientific model is a
a. | representation of a real event or object. | b. | small building used
to conduct experiments. | c. | mathematical statement of a
theory. | d. | new theory that takes the place of an incorrect one. |
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26.
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The SI unit for measuring temperature is the
a. | degree. | c. | mole. | b. | kelvin. | d. | ampere. |
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27.
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Which SI prefix means one million?
a. | kilo- | c. | giga- | b. | mega- | d. | milli- |
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28.
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The decimal equivalent of 10–2 is
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29.
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What is 78,900,000,000 expressed in scientific notation?
a. | 789 ´ 109 | c. | 7.89 ´ 109 | b. | 78.9 ´
108 | d. | 7.89 ´ 1010 |
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30.
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You are asked to find the area of a room that is 4.56 m long and 5.668 m wide.
How many significant figures should you show in your answer?
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Matching
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Match each item with the correct statement below. a. | science | f. | chemistry | b. | technology | g. | physics | c. | model | h. | geology | d. | scientific law | i. | meteorology | e. | scientific
theory | j. | ecology |
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31.
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the application of scientific knowledge for practical purposes
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32.
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a branch of Earth science that studies the physical nature and history of
Earth
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33.
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observing, studying, and experimenting to find the nature of things
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34.
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a branch of physical science that studies matter and its changes
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35.
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an explanation of how a natural process works
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36.
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a branch of Earth science that studies the atmosphere and the weather
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37.
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a branch of biology that studies the balance in nature
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38.
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a representation used to study an object or event
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39.
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a description of a process in nature that can be tested by repeated
experiments
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40.
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a branch of physical science that studies forces and energy
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