Randolph 4th Motion
| Description: | 4th Grade Harcourt Science Unit F Chapter 2 Motion-Forces @ wk |
| Category: | Physical Science |
| Created by: | crandolph on 2007-03-20 |
| Word | Definition |
| relative motion | motion that is described based on a frame of reference |
| motion | any change of position |
| acceleration | change in the speed or direction of an object's motion |
| gravity | force that pulls all objects toward each other |
| position | describes a certain place |
| force | any push or pull |
| newton | metric unit of force |
| frame of reference | things around you that you use to describe motion |
| speed | measure of an object's change of position during a unit of time |
| weight | measure of the force of gravity on an object |
| friction | force that keeps two objects that are touching from easily sliding past each other |
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