Temperature & Heat: Heat Transfer

Question	Answer
Conduction	Heat transfer through rapid vibration of atoms and molecules
Thermal conductors	Substances in which conduction occurs easily (e.g. metal)
Thermal insulators	Substances in which conduction occurs only a little
U-value	Amount of heat energy conducted per second through 1 metre squared of a structure when a temperature difference of 1K is maintained between its ends
Convection	Transfer of heat via the movement of fluids
Convection current	Heated fluid expands, becomes less dense, and rises through the cooler fluid above it
Main method of heat transfer in liquids and gases	Convection
Radiation	Heat transfer via electromagnetic waves
Solar irradiance	Average amount of the Sun's energy falling per second perpendicularly on 1 metre squared of the Earth's surface

Resource summary

	Created by alex.examtime9373 almost 12 years ago

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