True/False
Indicate whether the sentence or statement is true
or false.


1.

Balanced forces acting on an object cause the object to accelerate.


2.

Gravity causes all falling objects to accelerate at a rate of 98
m/s^{2}.


3.

Wearing seat belts saves lives.

Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.


4.

Physical science is the study of_____. a.  energy  b.  behavior  c.  living
things  d.  matter  e.  matter and
energy   


5.

Physical science deals with the _____ of matter. a.  energy  b.  composition  c.  living
things  d.  properties  e.  properties and
composition   


6.

The
process of gathering information through the senses is called _____. a.  analyzing  b.  conclusion  c.  hypothesizing  d.  inferring  e.  observation   


7.

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   


8.

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     


9.

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   


10.

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   


11.

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   


12.

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     


13.

A
factor that does NOT change in an experiment is the _____. a.  constant  b.  control  c.  dependent
variable  d.  hypothesis  e.  independent
variable   


14.

An
organized process used to gather observations and test a hypothesis is _____. a.  an
exercise  c.  a
constant  b.  an experiment  d.  a problem     


15.

The
prefix kilo means _____. a.  1000  b.  100  c.  0.01  d.  0.001  e.  0.0001   


16.

The
prefix milli means _____. a.  1000  b.  100  c.  0.01  d.  0.001  e.  0.0001   


17.

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   


18.

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   


19.

A
person in a headon 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     


20.

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   


21.

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   


22.

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     


23.

Kym
won a 300m 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   


24.

Which
of the following objects has the greatest inertia? a.  baseball  b.  bowling ball  c.  pencil  d.  tabletennis ball  e.  toothpick   


25.

As
you climb a mountain, you get farther from the center of Earth. Your weight will
_____. a.  decrease  b.  increase  c.  remain the
same   


26.

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/s^{2}  b.  20
m/s^{2}  c.  16 m/s^{2}  d.  6
m/s^{2}  e.  5 m/s^{2}   


27.

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     


28.

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   


29.

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     


30.

The
acceleration due to gravity is _____. a.  98 m/s^{2}  c.  9.8 m/s  b.  9.8
m/s^{2}  d.  0.98
m/s     


31.

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   


32.

In
the equation p = m x v, the p represents _____. a.  friction  b.  inertia  c.  momentum  d.  position  e.  velocity   


33.

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   


34.

A
300N force acts on a 25kg object. The acceleration of the object is _____. a.  7500
m/s^{2}  b.  300 m/s^{2}  c.  25
m/s^{2}  d.  12 m/s^{2}  e.  0.083
m/s^{2}   


35.

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     

Matching



Match each statement with the correct item below. a.  amount of
material in an object  g.  plotted on the
vertical or yaxis  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     


36.

milli


37.

kilo


38.

centi


39.

mass


40.

kelvin


41.

second


42.

kilogram


43.

cubic
centimeter


44.

meter


45.

dependent variable


46.

SI



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   


47.

m/s^{2}


48.

kg


49.

N


50.

m/s
