what is conduction convection and radiation
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the process by which heat or electricity passes through a material
the process in which heat moves through a gas or a liquid as the hotter part rises and the cooler, heavier part sinks
powerful and very dangerous rays that are sent out from certain substances. You cannot see or feel radiation but it can cause serious illness or death
the process in which heat moves through a gas or a liquid as the hotter part rises and the cooler, heavier part sinks
powerful and very dangerous rays that are sent out from certain substances. You cannot see or feel radiation but it can cause serious illness or death
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Conduction is the process by which heat moves in solids.
Eg. Heating of a wooden block
Convection is the process by which heat moves in fluids
*FLUIDS - An object which has the tendency to flow is a fluid. All gases and liquids are fluids.*
Eg - Heating of water.
Radiation is the process by which heat propagates without any medium i.e. it travels in vacuum.
Eg - Heat from the sun travels through vacuum and reaches Earth in approximately 8.5 minutes.
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