Energy
- Created by: gemmathomason
- Created on: 12-10-15 21:28
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- Energy
- all objects have energy
- energy doesn't change, but is stored and transferred in different ways
- energy is stored in joules (J)
- energy can not appear or disappear it can only move
- all objects can emit and absorb infrared radiation.
- if the objects are the same temperature, black objects emit radiation more quickly than white surfaces
- this means black surfaces lose heat and cool down
- all objects absorb radiation
- shiny surfaces absorb infrared radiation slower than black matt surfaces.
- shiny surfaces reflect more infrared radiation than dark surfaces
- hotter surfaces emit radiation quicker than cool surfaces.
- objects are absorbing and emitting infrared radiation at the same time. If infrared radiation is emitted faster than it is absorbed then the objects cools down.
- all objects have energy
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