Science Vocabulary Nº3

Simple Machine: A device with few parts that make it easier to do work.

Effort Force: The force applied to a machine.

Resistance Force: The force that a machine acts against.

Lever: A simple machine made of a rigid bar on a pivot point.

Fulcrum: The pivot point of a lever.

Mechanical Advantage: The number of times a a machine multiplies the force applied.

Pulley: A grooved wheel that turns by the action of a rope in the groove.

Wheel and Axle: A simple machine made of a handle or axes attached to the center of a wheel.