An inclined plane is a sloping surface that allows an object to be moved from one height to another with less effort than lifting.
A wedge has a sharp edge at one end and is thick at the other end. It is used to split something apart. An axe is an example of a wedge.
A screw has a head, spiral shaft, and a pointed end. It is used to hold two or more items together.
A see-saw is an example of a lever. A lever is made of a long bar and a pivot point, called the fulcrum. It moves a force from one place to another. It helps to lift a large weight with very little effort. The most important parts are the effort, fulcrum, and load.
a form of lever used to lift an object using a system of ropes and a wheel
Wheel and axle
a round lever made up of a wheel which turns around an axle to lift heavy loads