Levers
Pulleys
Wheel and Axle
Inclined Planes
Screw
100
Definition of Lever
What is a simple machine that pivots around a fixed point- three classes of this simple machine
100
Definition of pulley
What is a simple machine made up of a grooved wheel that holds a rope or cable
100
Definition of a wheel and axle
What is a simple machine made up of two circular objects of different sizes
100
Definition of an inclined plane
What is a simple machine that is a straight slanted surface
100
Definition of screw
What is an inclined plane wrapped in a spiral
200
Only type of lever that has fulcrum in its middle
What is 1st class lever
200
Purpose of pulley
What is to alleviate hard work
200
Purpose of wheel and axle
What is to reduce the total friction that acts against the linear motion of an object along a surface
200
Purpose of inclined plane
What is to make it easier to lift something heavy
200
Purpose of screw
What is to do work by redirecting or focusing force
300
Example of 1st class lever
What are scissors
300
Example of pulley
What is a blinds cord
300
Example of wheel and axle
What is a doorknob
300
Example of an inclined plane
What is a wheel chair ramp
300
Example of screw
What is a lightbulb
400
Example of 2nd class lever
What is a stapler
400
Situation where you would use a pulley
What is when you have to raise heavy objects
400
Situation where you would use a wheel and axle
What is when you need to spin or open things
400
Situation where you would use an inclined plane
What is when you are lifting things on a moving truck
400
Situation where you would use a screw
What is when you need to tighten something
500
Example of 3rd class lever
What is a rake
500
Two ways a pulley works
What is to change the direction of a force and to change the amount of force
500
What a wheel and axle must do to be a simple machine
What is it must be able to move together
500
When the angle of the ramp is increased
What is the effort distance decreases, the effort force increases, and the amount of work stays the same
500
A screw is a modification of this simple machine
What is an inclined plane
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