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Chapter 4 Exam Review

Honors Physical Science Chapter 4 Exam Review
 
True/False
Indicate whether the 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.       Acceleration is defined as the rate of change of position.
 
____         4.       The momentum of a 5,000-kg truck that is standing still is greater than the momentum of a 3,000-kg truck that is also at rest.
 
____         5.       The projectile velocity is the highest velocity that will be reached by a falling object.
 
____         6.       When an object falls, it is reacting to the force of gravity.
 
____         7.       Jane is on a merry-go-round that is moving at a constant speed. Her velocity is also constant.
 
____         8.       Momentum is a property of an object and cannot be transferred from that object to another object.
 
____         9.       Objects in Earth's orbit appear to be weightless because they are in free fall.
 
____         10.     Friction is a force that encourages motion between two surfaces that are touching each other.
 
Multiple Choice
Identify the choice that best completes the statement or answers the question.
 
____         11.      The upward force on an object falling through the air is ____.
a.
air resistance
c.
momentum
b.
inertia
d.
terminal velocity
 
 
____         12.     The relationship among mass, force, and acceleration is explained by ____.
a.
conservation of momentum
b.
Newton's first law of motion
c.
Newton's second law of motion
d.
Newton's third law of motion
 
 
____         13.     A feather will fall through the air more slowly than a brick because of ____.
a.
air resistance
c.
inertia
b.
gravity
d.
momentum
 
 
____         14.     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
 
 
____         15.     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
 
 
____         16.     According to Newton's second law of motion, ____.
a.
F = m · a
c.
F = p · a
b.
F = m · v
d.
F = p · v
 
 
____         17.     When an object moves in a circular path, it accelerates toward the center of the circle as a result of ____.
a.
centripetal force
c.
gravitational force
b.
frictional force
d.
momentum
 
 
____         18.     The path of a projectile is ____.
a.
curved
c.
always vertical
b.
always horizontal
d.
straight
 
 
____         19.     For any object, the greater the force that's applied to it, the greater its ____ will be.
a.
acceleration
c.
inertia
b.
gravity
d.
velocity
 
 
____         20.     The size of the gravitational force between two objects depends on their ____.
a.
frictional forces
b.
inertia
c.
masses and the distance between them
d.
speed and direction
 
 
____         21.     As you get farther from the center of Earth, your weight will ____.
a.
decrease
c.
remain the same
b.
increase
d.
can't tell from information given
 
 
____         22.     When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called ____ forces.
a.
action-reaction
c.
frictional
b.
centripetal
d.
gravitational
 
 
____         23.     A real car moving at 10 km/h has more momentum than a toy car moving at the same speed because the real car ____.
a.
generates less friction
b.
has greater mass
c.
has less mass
d.
has greater forward motion
 
 
____         24.     In the equation p = m · v, the p represents ____.
a.
friction
c.
momentum
b.
inertia
d.
position
 
 
____         25.     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
 
 
____         26.     The unit of momentum is ____.
a.
kg · m
c.
kg · m/s2
b.
kg · m/s
d.
m/s2
 
 
____         27.     When two balls collide, the momentum of the balls after the collision is explained by ____.
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
 
 
____         28.     A 300-N force acts on a 25-kg object. The acceleration of the object is ____.
a.
7,500 m/s2
c.
25 m/s2
b.
300 m/s2
d.
12 m/s2
 
 
____         29.     A 3,000-N force acts on a 200-kg object. The acceleration of the object is ____.
a.
50 m/s2
c.
15 m/s2
b.
26 m/s2
d.
150 m/s2
 
 
____         30.     An object that is in free fall seems to be ____.
a.
not moving
b.
slowed by air resistance
c.
speeded up by air resistance
d.
weightless
 
 
____         31.     If gravity did NOT affect the path of a horizontally thrown ball, the ball would ____.
a.
go straight up
b.
fall straight down
c.
follow a curved path
d.
travel horizontally
 
 
 
Figure 3-1
 
____         32.     A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. Assume the string breaks at point A. In which direction will the ball be traveling an instant later?
a.
direction a
c.
direction c
b.
direction b
d.
direction d
 
 
____         33.     A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. In which direction will the acceleration on the ball be when the ball passes point A?
a.
direction a
c.
direction c
b.
direction b
d.
direction d
 

 
Honors Physical Science Chapter 4 Exam Review
Answer Section
 
TRUE/FALSE
 
       1.                 ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  1/3     STA:           PS1.1 CS2.1                     
 
       2.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/2    STA:           PS1.1 CS2.1                     
 
       3.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  1/3     STA:           PS1.1 CS2.1                     
 
       4.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/2    STA:           PS1.1 CS2.1                     
 
       5.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/4    STA:           PS1.1 CS2.1                     
 
       6.                ANS: T                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/1     STA:           PS1.1 CS2.1                     
 
       7.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge II
OBJ:                  1/1     STA:           PS1.1 CS2.1                     
 
       8.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/4    STA:           PS1.1 CS2.1                     
 
       9.                ANS: T                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/2    STA:           PS1.1 CS2.1                     
 
       10.               ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  1/2     STA:           PS1.1 CS2.1                     
 
MULTIPLE CHOICE
 
       11.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/1     STA:           PS1.1 CS2.1                     
 
       12.               ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/3    STA:           PS1.1 CS2.1                     
 
       13.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/1     STA:           PS1.1 CS2.1                     
 
       14.               ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  1/3     STA:           PS1.1 CS2.1                     
 
       15.               ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/1     STA:           PS1.1 CS2.1                     
 
       16.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  1/3     STA:           PS1.1 CS2.1                     
 
       17.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/4    STA:           PS1.1 CS2.1                     
 
       18.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/3    STA:           PS1.1 CS2.1                     
 
       19.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  1/4     STA:           PS1.1 CS2.1                     
 
       20.              ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/1     STA:           PS1.1 CS2.1                     
 
       21.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  2/1     STA:           PS1.1 CS2.1                     
 
       22.              ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/2    STA:           PS1.1 CS2.1                     
 
       23.              ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/4    STA:           PS1.1 CS2.1                     
 
       24.              ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/3    STA:           PS1.1 CS2.1                     
 
       25.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/1     STA:           PS1.1 CS2.1                     
 
       26.              ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/3    STA:           PS1.1 CS2.1                     
 
       27.              ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I
OBJ:                  3/4    STA:           PS1.1 CS2.1                     
 
       28.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II
OBJ:                  1/4     STA:           PS1.1 CS2.1                     
 
       29.              ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge II
OBJ:                  1/4     STA:           PS1.1 CS2.1                     
 
       30.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II
OBJ:                  2/2    STA:           PS1.1 CS2.1                     
 
       31.               ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II
OBJ:                  2/3    STA:           PS1.1 CS2.1                     
 
       32.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II
OBJ:                  1/1     STA:           PS 1.1 CS2.2                    
 
       33.              ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge II
OBJ:  1/1     STA:  PS1.1 CS2.1
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