Science: Unit E, Ch 2, Lessons 1-3
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14 terms
Terms | Definitions |
|---|---|
 thermal energy | enery of motion of particles in matter; thermal means heat |
| kenetic energy | energy of motion; all moving objects have this |
| temperature | a measure of the average energy of motion of particles |
| energy | the ability to cause a change; all movement of particles requires this |
| transfer of thermal energy | conduction, convection, and radiation |
| heat | the transfer of thermal energy from one peice of matter to another |
| radiation | bundles of energy that move through matter and empty space |
| conduction | how thermal energy moves through matter by particles bumping into each other; cooking on the stove; it can burn you |
| infrared radiation | bundles of enery that carry heat; sun burn |
| convection | energy tranfered in a liquid or gas; heat rises; hot air ballon |
| greenhouse effect | how our atmosphere helps keep earth warm |
| solar energy | enery given off by the sun; used for: heating water, electricity, cooking & more |
| waste heat | unneeded and unused thermal energy; examples: candles, engines, computers |
| fuel | any material that can burn; example: wood - 1st fuel |
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