What is convection?
Convection is a heat transfer process that occurs in fluids. During convection, hot, less dense fluids rise to the top of a system, while cooler, more dense fluids sink to the bottow of the system under gravity.
AD
Related Physics GCSE answers
All answers ▸Describe the photoelectric effect.
In the early 20th Century the plum pudding model of the atom was replaced by the nuclear model of the atom, explain why this happened.
Why does resistance increase with temperature?
Explain the resistance of and electrical component and what affects its value in a wire.