Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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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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2.
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The main branches of natural science are
A. | physics and chemistry. | C. | medicine and agriculture. | B. | biology, zoology,
and ecology. | D. | life,
physical, and earth science. |
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3.
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Technology can best be defined as
A. | science that uses computers. | C. | applied
science. | B. | new inventions. | D. | the use of lenses and microscopes. |
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4.
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Pure science is best defined as the
A. | continuing search for new knowledge. | B. | use of science to solve human
problems. | C. | study of the makeup of living things. | D. | application of scientific
knowledge. |
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5.
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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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6.
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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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7.
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What is a scientific law?
A. | It is the same as a hypothesis. | B. | It is a description of a natural
event. | C. | It is an explanation of a scientific observation. | D. | It is the conclusion
of a scientific experiment. |
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8.
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For a scientific theory to be valid, it must allow you to
A. | perform experiments. | C. | find a new, more complex explanation. | B. | obtain new results
each time. | D. | make
predictions. |
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9.
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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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10.
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Scientific theories can be changed or replaced when
A. | new technology is invented. | B. | new discoveries are made. | C. | scientists decide to
work on different problems. | D. | scientists make models of events or
objects. |
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11.
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Scientists use computer models to study complicated events and to
A. | perform experiments. | C. | change theories and laws. | B. | state
theories. | D. | make
predictions. |
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12.
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A series of logical steps that is followed in order to solve a problem is called
the
A. | experimental process. | C. | scientific method. | B. | scientific theory. | D. | model method. |
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13.
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The first step in the scientific method is usually
A. | making an observation. | C. | collecting data. | B. | forming a hypothesis. | D. | testing a
hypothesis. |
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14.
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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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15.
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What does it mean to say that "no experiment is a failure"?
A. | All experiments are observations of real events. | B. | All experiments
yield the desired results. | C. | All experiments give scientists work to
do. | D. | All experiments involve manipulating variables. |
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16.
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Which instrument has been used to detect the oldest, most distant objects in the
solar system?
A. | light telescope | C. | particle accelerator | B. | spectrophotometer | D. | radio telescope |
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17.
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Which question cannot be answered by an experiment?
A. | Does penicillin kill Salmonella bacteria? | B. | Is rabies caused by
a virus? | C. | Did a comet impact kill the dinosaurs? | D. | Can radiation cause
cancer? |
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18.
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The SI unit for measuring temperature is the
A. | degree. | C. | mole. | B. | kelvin. | D. | ampere. |
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19.
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Which SI prefix means one million?
A. | kilo- | C. | giga- | B. | mega- | D. | milli- |
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20.
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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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21.
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Maria is 123 centimeters tall. Her height in meters is
A. | 0123 m. | C. | 1.23 m. | B. | 0.123 m. | D. | 12.3 m. |
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22.
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A loaf of bread weighs 1362 g. The weight in kilograms is
A. | 1.362 kg. | C. | 01362 kg. | B. | 1362 kg. | D. | 001362 kg. |
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23.
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The force with which gravity pulls on a quantity of matter is referred to
as
A. | mass. | C. | volume. | B. | length. | D. | weight. |
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24.
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At which time of day was the temperature approximately 4ºC?
A. | 9:00 A.M. | C. | 11:00 A.M. | B. | 10:00 A.M. | D. | 12:00 P.M. |
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25.
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At which two times of day was the temperature the same?
A. | 7:00 A.M. and 7:00 P.M. | C. | 10:00 A.M. and 7:00
P.M. | B. | 7:00 A.M. and 10:00 P.M. | D. | 10:00 A.M. and 10:00 P.M. |
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26.
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The decimal equivalent of 10–2 is
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27.
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What is 78,900,000,000 expressed in scientific notation?
A. | 789 ´ 109 | C. | 7.89 ´ 1010 | B. | 7.89 ´
109 | D. | 7.89 ´ 1011 |
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28.
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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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29.
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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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30.
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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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31.
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What is the volume of a room that is 4 ´
102 cm long and 2 ´ 103 cm wide?
A. | 6 ´ 103 cm2 | C. | 8 ´ 105 cm2 | B. | 8 ´ 103 cm2 | D. | 8 ´
107 cm2 |
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32.
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A precise measurement is one that
A. | contains the correct number of significant figures. | B. | contains at least
three significant figures. | C. | is close to the true value. | D. | is as exact as
possible. |
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33.
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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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34.
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A measurement standard is defined as ____.
A. | a system of prefixes | B. | the distance between two
points | C. | the exact quantity people agree to use for comparison | D. | the interval between
two events |
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35.
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The prefix kilo- means ____.
A. | 1,000 | C. | 0.01 | B. | 100 | D. | 0.001 |
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36.
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The prefix milli- means ____.
A. | 1,000 | C. | 0.01 | B. | 100 | D. | 0.001 |
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37.
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The correct symbol for the SI unit of temperature is ____.
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38.
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The SI unit that is used to measure time is the ____.
A. | kelvin | C. | second | B. | kilogram | D. | meter |
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39.
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The variable plotted on the horizontal or x-axis is called the
____.
A. | dependent variable | C. | variable with the largest range | B. | independent
variable | D. | variable with the
smallest range |
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40.
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How many meters are there in 1,865 cm?
A. | 0.1865 | C. | 18.65 | B. | 1.865 | D. | 186.5 |
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41.
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In a graph showing temperature change of a material over time, temperature
change is the ____.
A. | dependent variable | C. | variable with the largest range | B. | independent
variable | D. | variable with the
smallest range |
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42.
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The best type of graph to use to show how some fixed quantity is broken down
into parts is ____.
A. | bar graph | C. | circle graph | B. | line graph | D. | scatter graph |
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43.
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One benefit of the SI system is that it is ____.
A. | based on units of 100 | C. | based on multiples of ten | B. | not used to measure
temperature | D. | not used in the
United States |
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44.
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A beaker contains 0.32 L of water. What is the volume of this water in
milliliters?
A. | 320 mL | C. | 32 mL | B. | 3.2 mL | D. | 0.32 mL |
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45.
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A box is 25 cm long, 6 cm wide, and 4 cm high. How many cubic centimeters of
water can it hold?
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46.
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The lightbulb is an example of ____.
A. | a dependent variable | C. | pure science | B. | an exercise | D. | technology |
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47.
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Another term for technology is ____.
A. | applied science | C. | matter | B. | energy | D. | pure science |
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48.
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The process of gathering information through the senses is called ____.
A. | analysis | C. | hypothesis | B. | observation | D. | inference |
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49.
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When designing an experiment, the first step is to ____.
A. | analyze the data | C. | state a hypothesis | B. | list a procedure | D. | state the
problem |
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50.
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A rule or principle that describes what happens in nature is a ____.
A. | hypothesis | C. | scientific law | B. | problem | D. | theory |
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51.
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An explanation of an event that is based on repeated observations and
experiments is a ____.
A. | hypothesis | C. | problem | B. | scientific law | D. | theory |
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52.
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An idea, event, or object can be represented by a ____ to help people better
understand it.
A. | constant | C. | law | B. | hypothesis | D. | model |
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53.
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In an experiment to determine whether the popping of popcorn is affected by the
temperature at which it is stored, counting the popped kernels is an example of a(n) ____.
A. | conclusion | C. | hypothesis | B. | control | D. | observation |
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54.
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A standard for comparison that helps to ensure that the experimental result is
caused by the condition being tested is the ____.
A. | constant | C. | dependent variable | B. | control | D. | hypothesis |
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55.
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A factor in an experiment that changes from the manipulation of the independent
variable is the ____.
A. | constant | C. | dependent variable | B. | control | D. | hypothesis |
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56.
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A factor that does NOT change in an experiment is the ____.
A. | constant | C. | dependent variable | B. | control | D. | hypothesis |
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57.
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Studying the effect of one thing on another in order to test a hypothesis is
a(n) ____.
A. | exercise | C. | constant | B. | experiment | D. | problem |
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58.
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A factor that is manipulated in an experiment to change the dependent variable
is the ____.
A. | constant | C. | control | B. | dependent variable | D. | independent
variable |
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59.
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The application of scientific knowledge to help people is ____.
A. | a discovery | C. | pure science | B. | a hypothesis | D. | technology |
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