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