Energy transfer by heat
- Created by: Princess Aleena
- Created on: 11-11-12 18:37
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- Energy Transfer By Heat
- Thermal Energy
- transferred by conduction, convection and Radiation
- Thermal Energy
- Conduction- involves paticles and happens in metals because of metal ions and free electrons
- Convection- happens in liquids and gasses because particles need to move freely. Involved convection currents
- Radiation- thermal radiation also called I.R. ( inferred radiation)
- Convection- happens in liquids and gasses because particles need to move freely. Involved convection currents
- the Hotter an object, more i.r. emmited
- Part of electromagnetic spectrum. no particles
- Dark surfaces absorb more i.r. than light surfaces
- long thin objects emmit more i.r. and fat short objects
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