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Science 5 Chapter 2 Test Review
Test Description: Forces
Instructions: Answer all questions to get your test result.
1) Besides strength, or magnitude, what does every force have?
A
magnetism
B
gravity
C
direction
D
friction
2) A ball is rolled across different surfaces. Which will cause the most friction?
A
paved road
B
grassy field
C
tile floor
D
cement sidewalk
3) How do electric and magnetic forces act on different objects?
A
They only push objects
B
They either push or pull objects
C
They only pull objects
D
They only push or pull objects when they touch each other
4) What happens when an object accelerates?
A
Only its speed changes
B
Its speed or direction changes
C
Its speed and direction do not change
D
Only its direction changes
5) When you ride a roller coaster, what makes your body rise out of its seat at the top of a hill?
A
inertia
B
friction
C
gravity
D
electricity
6) The greater the net force acting on an object,
A
The greater the mass of the object
B
The lesser the mass of the object
C
The greater the acceleration of the object
D
The lesser the acceleration of the object
7) What always happens when the forces acting on an object are equal in strength and opposite in direction?
A
The object becomes heavier
B
The motion of the object does not change
C
The object does not move
D
The object moves
8) When the sun is low in the sky early in the morning, trees form
A
short shadows
B
no shadows
C
all sizes of shadows
D
long shadows
9) How do you increase the acceleration of a pinecar derby car?
A
Make a streamlined design that reduces air resistance
B
Use wheels that will reduce friction with the track
C
All of these
D
Make the car as heavy as possible
10) Which of these do not affect the motion of a pitched ball?
A
air resistance
B
gravity
C
friction
D
magnetism
*select an answer for all questions
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