8-25 notes - Geography 1111 Notes 8-25-08 Energy Transfer...

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Geography 1111 Notes 8-25-08 Energy Transfer 1. Basic definitions 2. Energy transfer mechanisms 3. Properties of radiation Energy- the capacity to do work. Heat- energy due to internal, random molecular motion. Increase in heat-more random motion. All objects possess heat. Calorie- heat required to raise the temperature of 1 gram of water by 1 degree C. Temperature- intensity of heat energy; average speed of random motion of molecules. Heat is not the same as temperature. Comparison of temp. scales- Degrees C Degrees F Degrees K Freezing point of H 2 O 0 32 273 Boiling point of H 2 O 100 212 373 Mechanisms of Heat Transfer Conduction- a molecule to molecule transfer of heat. Occurs in sold objects… no rearrangement of the relative position of molecules. Heat goes from hot objects to cold objects. Convection- heat transfer by mass movement Molecules do change position relative to on another- organized motion. Most effective in liquids and gasses ( they lack rigid structure).
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This note was uploaded on 01/17/2011 for the course GEOG 1111 taught by Professor Hopkins during the Fall '08 term at University of Georgia Athens.

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8-25 notes - Geography 1111 Notes 8-25-08 Energy Transfer...

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