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Forces
Test Description: Science Chapter 18
Instructions: Answer all questions to get your test result.
1) Which term describes the forces that act on a soccer kicked by a player?
A
unblanced
B
combined
C
balanced
D
simple
2) Two teams are playing tug of war, but neither side moves. Which term describes the forces?
A
unbalanced
B
strong
C
weak
D
balanced
3) Two girls push a box to the left with a force of 20 N each. Another girl pushes on the box to the right with a force of 20 N. What is the net force?
A
0 N
B
20 N to the right
C
20 N to the left
D
60 N to the left
4) What are three examples of an inclined plane?
A
pulley, ramp, blade
B
lever, fulcrum, and crane
C
doorknob, wheel, and axle
D
wedge, chisel, axe
5) Which is NOT a simple machine?
A
seesaw
B
lawnmower
C
door knob
D
lever
6) Which force is used when a bar magnet picks up nails?
A
gravitational force
B
magnetic force
C
buoyant force
D
frictional force
7) What does buoyant force act against when pushing up on objects?
A
magnetism
B
work
C
unbalanced forces
D
gravity
8) What effects the gravitational force between objects?
A
pulls
B
temperature
C
height
D
mass
9) Why is a simple machine used?
A
to make work easier
B
to reduce friction
C
to reduce buoyancy
D
to reduce work
10) Which situation is work being done?
A
Sara pushing against a wall
B
Sammy kicking a soccer ball
C
Lonny thinking of a song
D
Maria holding a box
*select an answer for all questions
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