11-4-11 Science Study Guide
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Created by:
carolinewill2 on November 2, 2011
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Description:
William's Science guide
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27 terms
Terms | Definitions |
|---|---|
 force | a puch or a pull |
| energy | Forces transfer ______________, |
| a force started moving it | If something is moving, you know ______________________________________. |
| object's mass | How a force affects an object depends on the _______________________. |
| mass | the amount of matter in an object. |
| grams kilograms | Mass is measured in ___________ or __________________. |
| more mass | More force is needed to move an object with ______________________. |
| less mass | Less force is needed to move an object with ______________________. |
| a force stops it. | Once an object is moving, it moves until ___________________________. |
| motion | when an object changes position or place |
| motion speeding up, slowing down, turning and stopping | A force is needed to change _______. Some examples are ____________, ______________________, ______________, and ______________. |
| friction | a force created when things are rubbing against each other. It cannot be seen. |
| more friction there is | The harder things rub together the ________________________________. |
| motion heat energy | Friction turns ___________ energy into ______________________. |
| gravity | a force that pulls objects to the surface of Earth |
| weight | the amount of force gravity pulls on an object |
| acceleration | an object's change in velocity over a period of time |
| velocity | an object's speed and direction |
| force larger acceleration | A larger _________ causes a ___________________________. |
| spring scale | A ______________________ can be used to measure force. |
| size of the force | The numbers on the scale show the ______________________________. |
| newtons | metric unit of force. It is abbreviated N. It is a small amount of force. |
| 3 laws of motion | Sir Isaac Newton was the scientist who wrote the ____________________________, |
| Law 1 - Law of Inertia | objects that rest stay at rest and objects in motion stay in motion unless they are acted upon by an outside force |
| inertia | an object's resistqance to a change in motion |
| Law 2 | the greater the mass of the object being accelerated the greater the amount of force needed |
| Law 3 | for ecery action there is an equal and opposite reaction |
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