A typical question is about energy transfer - Explain the process of convection and give an example of where we can find them
Molecules in the air encounter an energy source, they gain energy and begin to heat up which causes them to vibrate faster and become less dense which causes them to rise. As they rise, they begin to lose energy, move slower and become more dense which causes them to drop again. This process is repeated.Convection currents are found in the mantle below the Earth's crust and in some kitchen appliances.
MM
Related Physics GCSE answers
All answers ▸Calculate how much charge flows through a circuit with 6.0A of current in seven minutes?
What is the difference between a series circuit and a parallel circuit?
Why would you get an electric shock if you touched a wire?
Alice and Bob are sat on a seesaw. The seesaw is in static equilibrium. Alice weighs 500N and is sat 0.5m to the left of the pivot. If Bob weighs 800N, how far from the pivot on the right is he sat? What happens if Bob moves closer to the pivot?