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Chapter 7 Vocabulary Quiz

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Questions	Answers
a measure of the distance an object moves in a given amount of time	speed
a measure of an object’s speed and direction	velocity
the change in an object’s velocity over a period of time	acceleration
a metric unit used to measure force	netwon
the result of a force applied to an object that causes it to move	work
the ability to do work	energy
a metric unit used to measure work, equal to one newton meter (Nm)	joule
a device that makes work easier and which has few or no moving parts	simple machine
a beam or bar that pivots on a fixed point	lever
a straight, slanted surface used to raise an object	inclined plane
the point where a lever rotates or pivots	fulcrum
the force that is applied to a simple machine	effort
an object that resists the force applied by a simple machine	load
a measure of the steepness of a slope	grade