Thermal Energy (AQA GCSE Physics): Flashcards
📚Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
Heat flow direction
Heat flow direction
From higher to lower temperature
Three heat transfer methods
Three heat transfer methods
Conduction, convection, radiation
Heat transfer through solids
Heat transfer through solids
Conduction
How conduction spreads heat
How conduction spreads heat
Vibrations pass particle to particle
What increases when particles are heated
What increases when particles are heated
Kinetic energy
Why metals conduct heat well
Why metals conduct heat well
Free electrons carry energy
Heat transfer through fluids
Heat transfer through fluids
Convection
Effect of heating on fluid density
Effect of heating on fluid density
Becomes less dense and rises
How convection current forms
How convection current forms
Warm rises, cool sinks, creating circulation
Heat transfer via EM waves
Heat transfer via EM waves
Radiation
Radiation's medium requirement
Radiation's medium requirement
None - can occur in vacuum
Temperature vs radiation emitted
Temperature vs radiation emitted
Hotter objects emit more
Why air is poor conductor
Why air is poor conductor
Particles far apart
How insulation works
How insulation works
Traps air, reducing heat transfer rate