Heat Questions - GCSE Level

Q9. The diagram shows a drink chiller in use. The cold drink chiller is inserted into a warm bottle of drink, so the temperature of the drink decreases.

(a) Explain how a convection current is formed in the drink in the bottle.

[4 marks]

(b) As the chiller warms, the drink cools. State how the rate of energy transfer from the drink to the chiller changes as the chiller warms. Give a reason for your answer.

[2 marks]

(c) As the drink bottle cools down, water vapour in the air condenses on the outside of the bottle. Explain why.

[3 marks]

(9 marks total)