Show:
Category 1
Category 2
Category 3
Category 4
Category 5
100
A force consists of what?
What is a push or a pull.
100
The teeth on the wheels inside a watch are an example of what?
What is a gear.
100
A pulley is usually used to move objects where?
What is up and down.
100
This is used to cut or split an object?
What is a wedge.
100
Magnetism causes magnets to pull on certain what?
What is metals (iron).
200
The force that causes objects to slow down or stop is?
What is friction.
200
A wheelchair ramp is an example of a what?
What is an incline plane.
200
A rabbit's claws and a beaver's teeth are examples of what?
What are wedges.
200
This is made up of a center rod attached to a wheel?
What is a wheel and axle.
200
The weight of an object tell how much what is pulling on it?
What is gravity.
300
Earth's gravity pulls objects towards its what?
What is its center.
300
A lever is made of a bar or board supported underneath at the what?
What is the fulcrum.
300
A simple machine used to hold objects together is a what?
What is a screw.
300
This is a board that is supported underneath at the fulcrum?
What is a lever.
300
Work is done when a force moves an object over a what?
What is a distance.
400
Without gravity, everything on Earth would be what?
What is weightless.
400
The ends of a bar magnet are called what?
What are the poles.
400
A wheel with jagged edges like teeth is a what?
What is a gear.
400
If there was no gravity things would what?
What is float.
400
This has few or no moving parts?
What is a simple machine.
500
Metal objects stick to a magnets's what?
What is its ends.
500
A simple machine is a tool that has few or no what?
What are moving parts.
500
A simple machine made of a wheel and a rope is a what?
What is a pulley.
500
When smooth objects rub together there is _______friction than when rough objects rub together.
What is less.
500
This is where the magmetism is the strongest on a magnet.
What is the pole.