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Crosby's Physics Test

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/s2.
 

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 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
 

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 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
 

24. 

Which of the following objects has the greatest inertia?
a.
baseball
b.
bowling ball
c.
pencil
d.
table-tennis 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/s2
b.
20 m/s2
c.
16 m/s2
d.
6 m/s2
e.
5 m/s2
 

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/s2
c.
9.8 m/s
b.
9.8 m/s2
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 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
 

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 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
 

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/s2
 

48. 

kg
 

49. 

N
 

50. 

m/s
 



 
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