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Simple Machines
Test Description: 4th Grade Physical Science
Instructions: Answer all questions to get your test result.
1) Simple machines help people do work by...
A
changing the speed
B
changing the time
C
changing the work
D
changing a force
2) An inclined plane is made of...
A
a column
B
a ramp
C
a wheel and axle
D
a slanted surface.
3) A wedge changes a downward force to
A
an upward force.
B
a frictional force.
C
an outward force.
D
a gravitational force.
4) A screw changes a weak circular force to a...
A
weak downward force.
B
strong upward force.
C
strong downward force.
D
weak upward force.
5) What simple machine could be used to cut an apple?
A
wedge
B
wheel and axle
C
inclined plane
D
screw
6) The following are examples of levers EXCEPT
A
students playing on a seesaw
B
screw driver opening a paint can
C
knife cutting an pizza
D
baseball bat hitting a ball
7) Which of the following is an example of a wheel and axle?
A
flag pole
B
spiral staircase
C
knife
D
door knob
8) A simple machine made of a stiff bar that moves freely around a fulcrum is a
A
screw
B
lever
C
wheel and axle
D
pulley
9) A simple machine made up of a rope fitted around the rim of a fixed wheel is a
A
inclined plane
B
lever
C
wheel and axle
D
pulley
10) How does a pulley change a force?
A
It changes the strength of the force.
B
It changes the distance over which force is applied.
C
It changes the speed of the force.
D
It changes the direction of the force.
11) What simple machine allows you to raise a flag without climbing a flag pole?
A
screw
B
lever
C
wheel and axle
D
pulley
12) A pair of scissors is made of which two simple machines?
A
lever and pulley
B
pulley and wheel and axle
C
lever and wedge
D
inclined plane and lever
13) The following are simple machines EXCEPT...
A
lever
B
screw
C
scissors
D
pulley
14) The following simple machines can be used to lift objects EXCEPT
A
lever
B
wedge
C
pulley
D
inclined plane
15) Which simple machine is part of both a screw AND a wedge?
A
inclined plane
B
wheel and axle
C
lever
D
pulley
16) Avery is pushing a toy box across a carpeted floor. What could make the box move faster?
A
removing toys from the box
B
putting toys on the carpet in front of the box
C
adding toys to the box
D
having a friend sit on the box
17) Making an elevator go up or down is a job for a...
A
button
B
inclined plane
C
pulley
D
lever
18) Speed + direction = _____.
A
distance
B
time
C
velocity
D
motion
19) A pizza cutter is made of which two simple machines?
A
inclined plane and wheel and axle
B
inclined plane and screw
C
wedge and screw
D
wedge and wheel and axle
20) Which simple machine is made of an inclined plane wrapped around a center column?
A
lever
B
wheel and axle
C
pulley
D
screw
*select an answer for all questions
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