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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A factor
that does NOT change in an experiment is the ____. a. | constant | c. | dependent
variable | b. | hypothesis | d. | control | | | | |
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2.
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A
measurement standard is defined as ____. a. | the distance between two points | b. | a system of
prefixes | c. | the exact quantity people agree to use for
comparison | d. | the interval between two events | | |
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3.
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A beaker
contains 0.32 L of water. What is the volume of this water in milliliters? a. | 0.32
mL | c. | 320
mL | b. | 32
mL | d. | 3.2
mL | | | | |
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4.
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A factor in
an experiment that changes from the manipulation of the independent variable is the
____. a. | dependent
variable | c. | control | b. | hypothesis | d. | constant | | | | |
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5.
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The variable
plotted on the horizontal or x-axis is called the ____. a. | dependent
variable | c. | variable with the
smallest range | b. | variable with the largest range | d. | independent variable | | | | |
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6.
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One benefit
of the SI system is that it is ____. a. | not used in the United States | c. | based on multiples of ten | b. | not used to measure
temperature | d. | based on units of
100 | | | | |
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7.
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In a graph
showing temperature change of a material over time, temperature change is the ____. a. | variable with the
largest range | c. | variable with the
smallest range | b. | independent variable | d. | dependent variable | | | | |
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8.
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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. | control | c. | constant | b. | hypothesis | d. | dependent variable | | | | |
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9.
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The correct
symbol for the SI unit of temperature is ____.
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10.
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The SI unit
that is used to measure time is the ____. a. | meter | c. | kelvin | b. | kilogram | d. | second | | | | |
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11.
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An idea,
event, or object can be represented by a ____ to help people better understand it. a. | hypothesis | c. | law | b. | constant | d. | model | | | | |
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12.
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An
explanation of an event that is based on repeated observations and experiments is a
____. a. | problem | c. | hypothesis | b. | scientific law | d. | theory | | | | |
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13.
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The
application of scientific knowledge to help people is ____. a. | pure
science | c. | a
hypothesis | b. | a discovery | d. | technology | | | | |
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14.
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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. | control | c. | hypothesis | b. | observation | d. | conclusion | | | | |
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15.
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The prefix
milli- means ____. a. | 100 | c. | 0.01 | b. | 0.001 | d. | 1,000 | | | | |
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16.
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A rule or
principle that describes what happens in nature is a ____. a. | theory | c. | scientific
law | b. | hypothesis | d. | problem | | | | |
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17.
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Studying the
effect of one thing on another in order to test a hypothesis is a(n) ____. a. | problem | c. | experiment | b. | constant | d. | exercise | | | | |
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18.
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A factor
that is manipulated in an experiment to change the dependent variable is the ____. a. | independent
variable | c. | dependent
variable | b. | constant | d. | control | | | | |
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19.
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The prefix
kilo- means ____. a. | 1,000 | c. | 0.001 | b. | 100 | d. | 0.01 | | | | |
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20.
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When
designing an experiment, the first step is to ____. a. | state the
problem | c. | list a
procedure | b. | analyze the data | d. | state a hypothesis | | | | |
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21.
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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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22.
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How many
meters are there in 1,865 cm? a. | 0.1865 | c. | 1.865 | b. | 18.65 | d. | 186.5 | | | | |
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23.
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The process
of gathering information through the senses is called ____. a. | inference | c. | analysis | b. | hypothesis | d. | observation | | | | |
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24.
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The
lightbulb is an example of ____. a. | technology | c. | an exercise | b. | pure science | d. | a dependent variable | | | | |
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25.
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The best
type of graph to use to show how some fixed quantity is broken down into parts is
____. a. | circle
graph | c. | bar
graph | b. | line graph | d. | scatter graph | | | | |
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Matching
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Match
each item with the correct statement below. a. | milli- | g. | kilogram | b. | kilo- | h. | cubic centimeter | c. | centi- | i. | meter | d. | mass | j. | dependent variable | e. | kelvin | k. | SI | f. | second | | | | |
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26.
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amount of
material in an object
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27.
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SI unit of
time
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28.
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SI prefix
meaning 1,000
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29.
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SI unit of
length
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30.
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plotted on
the vertical or y-axis
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31.
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SI prefix
meaning 0.01
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32.
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SI prefix
meaning 0.001
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33.
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worldwide
system of measurement
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34.
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SI unit of
mass
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35.
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derived unit
of volume
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Read the paragraph and then match each item with the correct statement
below.
An experiment was designed to investigate the effect
of caffeine on the heartbeat of water fleas. Two populations of water fleas were cultured. Both
populations had water with the same mineral content, were supplied with identical amounts of bacteria
as food, received the same amount of light, and had their temperature maintained at 20ºC. Every
two hours, water fleas from both populations were selected and their heartbeats were monitored. The
fleas of population one had caffeine administered five minutes before their heartbeat was checked.
The fleas of population two were given nothing. a. | independent variable | c. | constant | b. | dependent variable | d. | control | | | | |
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36.
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What part of
the experiment was the water temperature?
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37.
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What part of
the experiment was the caffeine?
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38.
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What part of
the experiment was the food?
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39.
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What part of
the experiment was the heartbeat?
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40.
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What part of
the experiment was population two?
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