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Thursday, September 4, 2008

convection currents occur only in fluids such as liquids and gases but not in solids.


- convection involves the bulk movements of the fluids


- those fluids carry thermal energy


For solids,
- thermal energy is tranferred from one particle to another through

VIBRATIONS.


- without any bulk movement of the particles themselves








Warm air rises and cool air sinks; a convection current forms in a room resulting from uneven heating and cooling

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