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Invisible Forces Unit Vocab Quiz 1

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Questions	Answers
a push or a pull	force
an invisible force that resists the motion of an object	friction
an invisible force that pulls any object down, toward Earth	gravity
a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with	model
a change in the position of an object	motion
something that happens again and again and again in a way that can be predicted	pattern
to guess what will happen based on things you know	predict