Indiana Science Grade 7

Chapter 11: Motion and Momentum

Motion and Momentum

1.
Something is in motion if it __________.
A)changes properties
B)changes distance
C)changes position
D)changes state
2.
Movement occurs when an object moves relative to a __________.
A)stationary object
B)different object
C)moving object
D)reference point
3.
What is a measure of how hard it is to stop a moving object?
A)inertia
B)acceleration
C)momentum
D)velocity
4.
A golf club hitting a ball is an example of an __________ collision.
A)energetic
B)elastic
C)inelastic
D)explosive
5.
The reason an object can transfer energy to another after a collision is because of the conservation of __________.
A)momentum
B)matter
C)energy
D)speed
6.
The mathematical equation for momentum is __________.
A)momentum = velocity/mass
B)momentum = mass x velocity
C)momentum = mass/velocity
D)momentum = weight x speed
7.
During a(n) __________ collision, objects bounce off each other.
A)solid
B)elastic
C)explosive
D)inelastic
8.
What are the SI units for acceleration?
A)m2/s
B)m/s2
C)s2/m
D)s/m2
9.
When something slows, its acceleration is __________.
A)negative
B)constant
C)positive
D)instantaneous
10.
When a car goes around a curve at 20 mph, the __________ changes.
A)speed
B)instantaneous speed
C)average speed
D)velocity
11.
What is the tendency for an object to resist change in its motion?
A)momentum
B)mass
C)inertia
D)matter
12.
The __________ measures the speed during an entire trip.
A)average speed
B)overall speed
C)acceleration
D)instantaneous speed
13.
__________ is distance divided by time.
A)Velocity
B)Acceleration
C)Displacement
D)Speed
14.
When something accelerates then stops accelerating, what happens to the object?
A)stops completely
B)slows
C)continues to move at a constant velocity
D)goes faster
15.
An object that has the same speed but changes direction is __________.
A)speeding
B)accelerating
C)displacing
D)slowing down
16.
At the beginning of a track race, the instantaneous speed of all runners is __________.
A)different
B)unable to be measured
C)the average speed
D)0 m/s
17.
When you graph speed, time is on the __________.
A)x-axis
B)y-axis
C)z-axis
D)vertical axis
18.
To find acceleration, you first subtract __________ then divide by time.
A)velocity from distance
B)final speed from initial speed
C)final time from initial time
D)initial speed from final speed
19.
When a negative acceleration is graphed, the line __________.
A)goes to zero
B)slopes downward
C)slopes upward
D)remains constant
20.
In an inelastic collision between a moving object and a stationary object, the final velocity of both objects is __________.
A)the same as the original velocity of the moving object
B)less than the original velocity of the moving object
C)more than the original velocity of the moving object
D)zero
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