Work and Energy Vocabulary

Vocabulary flashcards for Work and Energy chapter.

Machine

A device that makes work easier.

Compound Machine

A machine made of two or more simple machines.

Mechanical Advantage

The ratio of output force to input force.

System

Not defined in notes, requires external definition.

Potential Energy

Energy that is stored.

Chemical Potential Energy

Energy stored in chemical bonds.

Law of Conservation of Energy

Energy cannot be created or destroyed, only transformed.

Power

The rate at which work is done.

Work

Force applied through distance.

Simple Machine

Basic mechanical devices that make work easier (lever, pulley, screw, wheel and axle, wedge, inclined plane).

Efficiency

Ratio of work output to work input.

Energy

The ability to cause change.

Kinetic Energy

Energy of motion.

Elastic Potential Energy

Potential energy stored in elastic materials.

Gravitational Potential Energy

Potential energy due to an object's position above the ground.

Mechanical Energy

The sum of potential and kinetic energy in a system.