1. screw
A simple machine made up of an inclined plane wrapped around a rod, used to hold objects together
pulley
A simple machine that has a rope or chain wrapped around the edge of a wheel; used to move an object up, down, or sideways

2. Whatever is produced by a cause; a result; what happened
A person, thing, or event that makes something happen; why something happens
effect
Whatever is produced by a cause; a result; what happened

3. force
A push or a pull that causes something to move; a force changes the way an object moves
friction
The force caused by rubbing two objects together that causes that object to slow down or stop moving

4. gravity
The force that pulls objects toward the center of the Earth; gravity is what gives us our weight
magnetism
The force that causes magnets to pull on objects that are made of certain metals, such as iron

5. pole The place on a magnet where the magnetic force is the strongest
work
Something done whenever a force moves an object over a distance; the object moves in the direction of the push or pull

6. Simple Machine Inclined Plane
A tool that has few or no moving parts; there are 6 different kinds of simple machines
Inclined Plane
A simple machine that is a flat surface with one end higher than the other; a ramp

7. lever
A simple machine made of a bar or board that is supported underneath by a fulcrum; a seesaw
fulcrum
The point on which a lever is supported and moves; an object is lifted more easily if you move the fulcrum closer to the object

8. Wheel and Axle
A simple machine that has a center rod (axle) that is attached to a wheel
Gear
A Gear has a wheel with jagged edges like teeth that fit between the teeth of another gear, causing the wheel to turn.

9. Wedge
A simple machine that is made up of 2 inclined planes that come together; used to cut or split an object