Transfer of Heat Flashcards
(11 cards)
What is radiation?
Radiation is the transfer of energy by electromagnetic waves.
What states of matter do the electromagnetic waves pass through?
Solids, liquids, gasses, a vacuum like space
What is this energy often called?
Radiant energy
What is an insulator?
A material which does not allow heat to pass through it easily
What is conduction?
The transfer of heat by direct contact between two objects or particles.
What is a conductor?
Materials that transfer heat easily.
What happens when you heat particles?
They expand and become less dense
What is convection?
Heat transferred by the movement of molecules within a substance
What states of matter does convection happen in?
Liquids and gasses
Why can’t convection happen in solids?
A solid’s particles can not more freely
What causes a convection current?
The difference in densities between two liquids
