How does heat travel in air or water for class 7
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When there is heat at the bottom of this air or water, the air or water molecules in contact with the heat start to move, and the molecules spread apart. The heated air or water becomes less dense. ... The air or water that gets pushed out of the way falls down. This sets up a circular motion.
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Heat convection is the process of transferring heat from a hot object to a cooler object via a fluid such as air or water. ... Since hot air is less dense than cool air, the radiator-heated air rises towards the ceiling carrying some of the radiator heat with it.
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