What is __
What is __
100

What is friction?

The resistance that one surface encounters when moving over another.

100

What is a fulcrum?

The fulcrum is the pivot point of a lever.

200

What is force?

Strength or energy as an attribute of physical action or movement.

200
What is Anthracite?

Anthracite is a form of coal that contains less sulfur.

300

What is effort?

Effort is the force applied to make an object move.

300

What is a shaft?

The shaft is a long, narrow part or section forming the handle of a screw.

400

What is bouyancy?

The ability or tendency to float in water and air.

400

What is a compound machine?

A compound machine is a machine formed by two or more simple machines.
500

What is fission?

The process of splitting an atom used in the creation of nuclear energy.

500

What is mechanical energy?

Mechanical energy is the ability to do work