What are the three type of heat transfer?
Conduction, convection, and radiation.
How is heat transferred through space?
Heat is transferred through space by radiation, as electromagnetic waves.
In which layers of Earth do convection currents occur?
The mantle and the liquid outer core.
What happens to the density of a liquid that is heated?
Its density decreases.
Give an example of each of the types of heat transfer.
Conduction: a metal pan or spoon becoming hot when touching a heat source. Convection: hot water circulating as it boils. Radiation: sunlight warming Earth.
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