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WYLIE Science UB_2
4th grade WYLIE Science Unit B_ch 2
| Term | Definition |
|---|---|
| force | a push or a pull on an object that can cause it to change motion |
| gravity | a force that pulls any two objects toward one another, such as you toward the center of the earth |
| inertia | the tendency of a moving object to stay in motion or a resting object to stay at rest |
| friction | a force that slows the motion of moving objects |
| energy | the ability to do work |
| potential energy | energy that an objects has because of position |
| kinetic energy | energy of motion |
| mechanical energy | the kind of energy an object has because it can move or because it is moving |
| chemical energy | energy that comes from chemical changes |
| electrical energy | energy that comes from the flow of electricity |
| work | the result of a force moving an object |
| simple machine | a machine made of one or two parts |
| compound machine | a machine made of two or mote simple machines |
| complex machines | a machine made of many simple and compound machines |
Created by:
Wylie
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