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Grade 8 Motion

Motion, Forces, and Energy Ch 1

QuestionAnswer
motion when an object's distance from another object is changing
reference point a place or object used for comparison to determine if something is in motion
International System of Units (SI) the number system based on the number ten
meter the basic unit of length
speed distance an object traveled in one unit of time; distance/time
constant speed speed of an object that does not change
average speed divide total distance traveled by the total time
velocity speed in a given direction
plates the upper layer of Earth that consists of more than a dozen pieces
theory of plate tectonics Earth's plates move slowly in various directions
conversion factor a fraction in which the numerator and denominator are equal
acceleration the rate of which velocity changes
formula to calculate acceleration final velocity -initial velocity/time
Created by: Dcoleman
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