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