Simple Machines: Question Preview (ID: 30663)

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Simple machines help people do work by...
a) changing a force b) changing the time c) changing the speed d) changing the work
An inclined plane is made of...
a) a wheel and axle b) a column c) a ramp d) a slanted surface.
A wedge changes a downward force to
a) an upward force. b) an outward force. c) a frictional force. d) a gravitational force.
A screw changes a weak circular force to a...
a) weak upward force. b) weak downward force. c) strong upward force. d) strong downward force.
What simple machine could be used to cut an apple?
a) inclined plane b) screw c) wedge d) wheel and axle
The following are examples of levers EXCEPT
a) screw driver opening a paint can b) baseball bat hitting a ball c) knife cutting an pizza d) students playing on a seesaw
Which of the following is an example of a wheel and axle?
a) door knob b) knife c) flag pole d) spiral staircase
A simple machine made of a stiff bar that moves freely around a fulcrum is a
a) lever b) wheel and axle c) pulley d) screw
A simple machine made up of a rope fitted around the rim of a fixed wheel is a
a) inclined plane b) lever c) pulley d) wheel and axle
How does a pulley change a force?
a) It changes the strength of the force. b) It changes the speed of the force. c) It changes the distance over which force is applied. d) It changes the direction of the force.
What simple machine allows you to raise a flag without climbing a flag pole?
a) lever b) pulley c) screw d) wheel and axle
A pair of scissors is made of which two simple machines?
a) inclined plane and lever b) lever and pulley c) pulley and wheel and axle d) lever and wedge
The following are simple machines EXCEPT...
a) lever b) pulley c) screw d) scissors
The following simple machines can be used to lift objects EXCEPT
a) inclined plane b) lever c) pulley d) wedge
Which simple machine is part of both a screw AND a wedge?
a) inclined plane b) pulley c) wheel and axle d) lever
Avery is pushing a toy box across a carpeted floor. What could make the box move faster?
a) adding toys to the box b) removing toys from the box c) having a friend sit on the box d) putting toys on the carpet in front of the box
Making an elevator go up or down is a job for a...
a) lever b) button c) inclined plane d) pulley
Speed + direction = _____.
a) distance b) time c) velocity d) motion
A pizza cutter is made of which two simple machines?
a) inclined plane and screw b) wedge and wheel and axle c) wedge and screw d) inclined plane and wheel and axle
Which simple machine is made of an inclined plane wrapped around a center column?
a) lever b) pulley c) screw d) wheel and axle
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