True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Balanced forces acting on an object cause the object to accelerate.
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2.
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Gravity causes all falling objects to accelerate at a rate of 98
m/s2.
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3.
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Wearing seat belts saves lives.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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4.
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Physical science is the study of_____. a. | energy | b. | behavior | c. | living
things | d. | matter | e. | matter and
energy | | |
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5.
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Physical science deals with the _____ of matter. a. | energy | b. | composition | c. | living
things | d. | properties | e. | properties and
composition | | |
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6.
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The
process of gathering information through the senses is called _____. a. | analyzing | b. | conclusion | c. | hypothesizing | d. | inferring | e. | observation | | |
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7.
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A
testable prediction about a possible solution to a problem is called _____. a. | a
conclusion | b. | an exercise | c. | an
experiment | d. | a hypothesis | e. | a
variable | | |
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8.
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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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9.
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A
rule or principle that describes the behavior of something in nature is a _____. a. | hypothesis | b. | problem | c. | scientific
law | d. | theory | e. | variable | | |
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10.
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An
explanation of an event that is based on repeated observations and experiments is a
_____. a. | hypothesis | b. | problem | c. | scientific
law | d. | theory | e. | variable | | |
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11.
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A
situation in which the steps needed to find a solution are obvious is _____. a. | a
hypothesis | b. | a problem | c. | an
exercise | d. | an experiment | e. | a
variable | | |
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12.
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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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13.
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A
factor that does NOT change in an experiment is the _____. a. | constant | b. | control | c. | dependent
variable | d. | hypothesis | e. | independent
variable | | |
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14.
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An
organized process used to gather observations and test a hypothesis is _____. a. | an
exercise | c. | a
constant | b. | an experiment | d. | a problem | | | | |
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15.
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The
prefix kilo- means _____. a. | 1000 | b. | 100 | c. | 0.01 | d. | 0.001 | e. | 0.0001 | | |
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16.
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The
prefix milli- means _____. a. | 1000 | b. | 100 | c. | 0.01 | d. | 0.001 | e. | 0.0001 | | |
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17.
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A
mail truck takes 20 seconds to move between mailboxes that are 10 m apart. What is the average speed
of the mail truck? a. | 200 m/s | b. | 5
m/s | c. | 2
m/s | d. | 0.5
m/s | e. | 0.2
m/s | | |
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18.
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The
rate of change of speed and/or the change in direction is called _____. a. | acceleration | b. | average speed | c. | gravity | d. | inertia | e. | velocity | | |
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19.
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A
person in a head-on car collision, who is not wearing a seat belt, continues to move forward at the
original speed of the car because of _____. a. | friction | c. | gravity | b. | inertia | d. | weight | | | | |
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20.
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Forces that are equal in size and opposite in direction are _____. a. | balanced
forces | b. | frictional forces | c. | gravitational
forces | d. | net forces | e. | weak
forces | | |
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21.
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Newton's first law of motion states that an object stays at rest unless a _____ acts
on it. a. | balanced
force | b. | frictional force | c. | gravitational
force | d. | net force | e. | strong
force | | |
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22.
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The
size of the gravitational force between two objects depends on their _____. a. | frictional
forces | c. | masses and the
distance between them | b. | inertia | d. | speed and direction | | | | |
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23.
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Kym
won a 300-m race in 40 seconds. What was her average speed? a. | 15
m/s | b. | 8.5
m/s | c. | 7.5
m/s | d. | 1.3
m/s | e. | 0.133
m/s | | |
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24.
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Which
of the following objects has the greatest inertia? a. | baseball | b. | bowling ball | c. | pencil | d. | table-tennis ball | e. | toothpick | | |
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25.
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As
you climb a mountain, you get farther from the center of Earth. Your weight will
_____. a. | decrease | b. | increase | c. | remain the
same | | |
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26.
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John
goes over the top of a hill at a speed of 4.0 m/s while on his bicycle. Four seconds later, his speed
is 24 m/s. What is John's acceleration? a. | 24 m/s2 | b. | 20
m/s2 | c. | 16 m/s2 | d. | 6
m/s2 | e. | 5 m/s2 | | |
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27.
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The
relationship among mass, force, and acceleration is explained by _____. a. | conservation of
momentum | c. | Newton's second
law of motion | b. | Newton's first law of motion | d. | Newton's third law of motion | | | | |
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28.
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A
feather will fall through the air more slowly than a brick because of _____. a. | air
resistance | b. | gravity | c. | inertia | d. | momentum | e. | terminal
velocity | | |
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29.
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In
the absence of air, a penny and a feather that are dropped from the same height at the same time will
_____. a. | fall at
different rates | c. | float | b. | fall at the same rate | d. | not have momentum | | | | |
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30.
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The
acceleration due to gravity is _____. a. | 98 m/s2 | c. | 9.8 m/s | b. | 9.8
m/s2 | d. | 0.98
m/s | | | | |
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31.
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According to Newton's second law of motion, _____. a. | F =
m x a | b. | F = m x v | c. | F =
p x a | d. | F = p x v | e. | F =
v x a | | |
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32.
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In
the equation p = m x v, the p represents _____. a. | friction | b. | inertia | c. | momentum | d. | position | e. | velocity | | |
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33.
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The
statement "to every action there is an equal and opposite reaction" is
_____. a. | the law of
conservation of momentum | b. | Newton's first law of motion | c. | Newton's second
law of motion | d. | Newton's third law of motion | e. | inertia | | |
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34.
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A
300-N force acts on a 25-kg object. The acceleration of the object is _____. a. | 7500
m/s2 | b. | 300 m/s2 | c. | 25
m/s2 | d. | 12 m/s2 | e. | 0.083
m/s2 | | |
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35.
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The
Formula used to calculate speed or velocity is a. | V = ma | c. | V- Final Speed - Initial Speed / Total
Time | b. | V =
d/t | d. | V/M =
a | | | | |
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Matching
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Match each statement with the correct item below. a. | amount of
material in an object | g. | plotted on the
vertical or y-axis | b. | SI unit of time | h. | SI unit of temperature | c. | SI unit of
length | i. | SI unit of
mass | d. | SI prefix
meaning 0.001 | j. | SI prefix
meaning 0.01 | e. | worldwide system of measurement | k. | derived unit of volume | f. | SI prefix
meaning 1000 | | | | |
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36.
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milli-
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37.
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kilo-
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38.
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centi-
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39.
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mass
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40.
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kelvin
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41.
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second
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42.
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kilogram
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43.
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cubic
centimeter
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44.
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meter
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45.
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dependent variable
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46.
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SI
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Match each statement with the correct item below. a. | the unit of
weight | b. | the unit of average speed | c. | the unit of
mass | d. | the unit of
acceleration | | |
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47.
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m/s2
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48.
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kg
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49.
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N
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50.
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m/s
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