Rollers and Wheels
Inclined Planes
Pulleys
Levers
Classes of Levers
100
This was invented first and used by ancient societies to move large objects.
What is a roller
100
Anything that helps us perform a task more easily
What is a machine or simple machine
100
A pulley is an type of simple machine with a grooved wheel
What is wheel and axle
100
The pivot point on a lever
What is a fulcrum
100
Having the fulcrum in the middle of the bar and effort and load on the ends
What is class one lever
200
A simple machine made up of an attached wheel and cylinder.
What is a wheel and axle
200
A simple machine with a slope, such as a ramp
What is an inclined plane
200
A type of pulley that is attached and stationary
What is fixed pulley
200
Having the fulcrum closer to the load
What is uses less force or makes moving the load easier
200
Having the fulcrum at the end, the load in the middle and the effort at the end is
What is a class two lever
300
Wheels and rollers reduce this force
What is friction
300
A simple machine used to separate materials; two inclined planes together
What is a wedge
300
In a movable pulley the force goes in this direction
What is up
300
Having the fulcrum closer to the force means the load travels
What is higher
300
Having a fulcrum at the end, the load at the other end and the effort in the middle is
What is a class three lever
400
Rollers are more effective at doing this
What is carrying a heavy weight
400
Sloping ridges that wind or coil around a screw, bolt, or a jar lid
What is thread
400
A compound pulley has this many pulleys and these types of pulleys
What is 2 pulleys and fixed and movable pulleys
400
If the fulcrum is closer to the force lifting the load is
What is harder or takes more effort
400
A door is a type of lever
What is class two
500
Two advantages to using a wheel and axle rather than a roller
What is moves faster and easier to control
500
A push or pull acting upon an object
What is force
500
The advantage and disadvantage to using a compound pulley
What is uses less force but load travels a shorter distance
500
Having a longer bar for a lever is an advantage because
What is it takes less force to lift a load
500
Most sporting equipment is a type of lever
What is class three lever
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