Science
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Created by:
mbrollier45 on December 14, 2010
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33 terms
Terms | Definitions |
|---|---|
 theory | an explination of things or events based on knowledge gained from observations |
| independent variable | variable you can change to see hoe it will affect the dependent variable |
| quantitative observation | number |
| infrence observation | your opinion on observations |
| weight | gravitational force exerted on an object |
| mass | measure of matter in an object |
| volume | amount of space taken up by an object |
| control | the standard by which test results can be compared |
| speed | distance an object travels per unit |
| velocity | speed of an object and direction of its motion |
| length | measurment of something |
| time | a point of time measured in minutes/hours |
| current | movement of electrical charges in a single direction |
| circuit | closed path that electrons flow in |
| acceleration | rate of change in velocity |
| density | mass per unit volume of a material |
| force | a push or pull |
| work | transfer of energy that occurs when a force makes an object move |
| qualitative observation | describing something |
| hypothesis | possible explanation for a problem |
| dependent variable | value changes according to the change in other variables |
| kinetic energy | energy a moving object has because of its motion |
| potential energy | stored energy due to position |
| energy | ability to change |
| power | amount of work done, or the amount of energy transferred |
| experimental group | you can change it |
| insulator | electrons can NOT move easily through it |
| conductor | electrons can move easily through it |
| electrical resistance | tendency for a material to oppose the low of electrons |
| voltage | force that causes charges to flow |
| Newtons 1st law | an object moves at a constant velocity unless an unbalanced force acts upon it |
| Newtons 2nd law | the net force on an object causes object to accelerate in direction of force |
| Newtons 3rd law | equal and opposite reaction Ex: chair pushes up w/ same force as person pushing down |
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