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Chapter 13 Vocabulary By Donavan

Published on Nov 19, 2015

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PRESENTATION OUTLINE

Potential energy

The energy stored in an object or material
Photo by penbentley

Gravitational potential energy

The gain in potential energy when an object is lifted up against gravity
Photo by satguru

Kinetic energy

The energy of a moving object
Photo by Cayusa

Work

Force applied to an object times the distance the object moves
Photo by Bob Jagendorf

Simple machine

A machine with few moving parts,making it easier to do work
Photo by Leo Reynolds

Effort force

The force applied to a machine
Photo by Ed Yourdon

Resistance force

The force the machine acts against
Photo by toffehoff

Fulcrum

The pivot point of a lever
Photo by Arria Belli

Mechanical advantage

The number of times a machine multiplies the force applied

Pulley

A grooved wheel that turns by the action of a rope in the groove
Photo by rptnorris

Wheel and axel

A simple machine made of a handle or axis attached to the center of a wheel

Inclined plane

A straight slanted surface that is not moved when it is used
Photo by thefixer

Screw

A inclined plane wrapped around a center bar
Photo by Martin Terber

Wedge

One or a combination of two inclined planes that is moved when moved
Photo by Leo Reynolds

Compound machine

A combination of two or more machines
Photo by wbaiv

Efficiency

A ratio of the work done by a machine compared by the work put into the machine
Photo by wbaiv