Simple and Compound Machines

Front

Simple Machine

Back

Machine with few or no moving parts that makes it easier to do work. The six types of simple machines are the lever, pulley, wheel and axle, inclined plane, wedge, and screw.

Front

Compound Machine

Back

Machine made of two or more simple machines.

Front

Work

Back

Result of a force moving an object over a distance.

Front

Mechanical Advantage

Back

The ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.

Front

Efficiency

Back

Amount of work a machine does compared to the amount of energy put into using the machine.

Front

Lever

Back

Simple machine that is a rigid bar that turns around a fixed point.

Front

Pivot

Back

The central point, pin, or shaft on which a mechanism turns or oscillates.

Front

Fulcrum

Back

Point around which a lever pivots or turns.

Front

Pulley

Back

Kind of wheel with a groove for a rope or cable.

Front

Wheel and Axle

Back

Simple machine that consists of a large wheel fixed to a smaller wheel or shaft called the axle.