This is what happens when an object is pushed or pulled to make it move
What is work
100
This is a simple machine which is a wheel with a rope, wire, or a chain around it.
What is a pulley
100
This is a long bar with a support.
What is a lever
100
This is the type of simple machine which helps run a ferris wheel in a carnival
What is wheel and axle
100
This is a type of simple machine which has two inclined planes joined together
What is a wedge
200
This is what helps people do work
What is a machine
200
This is the way a pulley makes lifting a load easier
What is changing the direction of the force
200
These are the parts of the lever
What are fulcrum (support), effort (input force), load (output force)
200
This is how wheel and axle is similar to a lever
What is both are simple machines that move around a fixed point. The lever moves around a fulcrum and wheel moves around an axle
200
The circular blade of a can opener and a screw have these simple machines
What is a wedge and an inclined plane wrapped around a central cylinder.
300
You are pushing hard against a wall which is stationary. This is the amount of work done on the wall.
What is no work is done as there is no movement of the wall.
300
This is a system of pulleys with one pulley fixed and this is what it is called.
What is a compound pulley which is known as a block and tackle.
300
These are the group 2, group 1, group 3 levers in order:
a. flagpole, ramp, pliers
b. nutcracker, ice tongs, ramp
c. nutcracker, pliers, ice tongs
d. ice tongs, flag pole, nutcracker
What is c - nutcracker, pliers, ice tongs
300
A screw driver is a simple machine of this type and this is how a carpenter's live is made easier by it.
What is a wheel and axle. The carpenter turns the handle (wheel) which turns the metal blade (axle) and force used to turn the handle increases by making the carpenter's work easier.
300
This is how a wedge and a screw are similar and this is how they are different
What is they are both simple machines that are type of inclined planes. The wedge is used to split things apart and screw is used to fasten things.
400
This is how simple machines make work easier
What is by using less force or by changing direction of force used to do the work
400
This is how a flag is raised on the flagpole.
What is a pulley
400
This is how a large heavy rock can be lifted by a simple lever using a small effort.
What is move the fulcrum closer to the rock (load) than to the effort
400
The handle of a pencil sharpener is this kind of a simple machine.
What is wheel and axle - the handle forms the wheel that turns the axle that goes through the center of the pencil sharpener.
400
You are trying to use a ramp to roll a wheel chair to a door. The ramp which would require the greatest force to go up would be if the slope was steep and ramp was smooth, or slope was gentle and ramp was smooth, slope was steep and sandpapered (rough), or slope was gentle and sandpapered
What is slope was steep and sandpapered
500
These are the six basic simple machines
What are lever, pulley, inclined plane, wheel and axle, wedge, and screw
500
This is what happens when an additional pulley is added in a compound pulley.
What is amount of effort needed is reduced.
500
This is how a can opener and scissors can be similar.
What is the long arms of the can opener and the handles of the scissors are all levers.
500
This is how a can opener and a pair of scissors is different
What is the can opener has a wheel and axle which allows a handle to turn the can but scissors have handles which are lever and blades which are wedges.
500
If you build a ramp to push an object up a slope, you push it part way and sit and rest. If the object is not to slide down this is what happens when you rest.
What is the friction between the ramp and the box balances the downward pull of gravity and keeps the box from sliding. This happens if the ramp is rough enough.