Science
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Created by:
Simonsclass on October 6, 2009
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26 terms
Terms | Definitions |
|---|---|
 Formula for PE | GPE (J) = weight (N) x height (M) |
| Formula for KE | KE = 1/2 MV² |
| Law of Conservation of Energy | energy neither created nor destroyed, only transformed or transferred. Energy absorbed = energy released |
| Energy efficiency | Ratio of useful energy to total energy |
| Energy Conservation | Saving total amount of energy to begin with |
| TE (not def) | KE increases, TE increases, temp increases, only 40% usuable |
| Transfer | moves from 1 place to another |
| Transformation | changes from 1 type to another |
| Qualitative | subjective, descriptions |
| Quantitative | objective, measurements, real numbers |
| Precision | set of numbers close to one another |
| Accuracy | numbers closest to the true value |
| GPE | stored energy due to object being above ground |
| Friction | force on objects/substances in contact; resists motion |
| Heat | movement of TE from hot to cold (b/c of temp dif) |
| Temperature | measure of average energy per molecule |
| Scientific Law | any theory not disproven (disproved) |
| Chemical (PE) | energy stored in bonds of atoms |
| Light (KE) | energy transferred by rapid movement of electromagnetic fields |
| Sound KE | energy transferred by vibration of object |
| Nuclear PE | energy stored in nucleus of atoms |
| Elastic PE | energy stored by stretching or compresion |
| Electric (static) PE | energy stored by buildup of charges (electrons or ions) |
| Electric (current) KE | movement of charge/energy from 1 place to another |
| Conduction | process by which energy is transferred dicrectly when materials touch |
| Conductor | Materials w/structure that easily allows energy transfer (ex. copper) |
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