O-LevelPhysicsThermal Physics5054/12 · May/June 2023 · Q181 Mark
Which statement describes the transfer of thermal energy in a liquid by convection?
Adecrease in its density causes the heated liquid to rise.
BFree electrons carry energy large distances through the liquid.
CInfrared radiation passes through the liquid and transfers energy.
DParticles of the liquid vibrate and pass energy to neighbouring particles.
✓ Correct answer
A: decrease in its density causes the heated liquid to rise.
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