Heat Questions - GCSE Level

Q13. A heater uses energy from a laptop computer to keep a mug of coffee hot. The diagram shows the heater connected to a laptop computer.

(a) Give two factors, other than the material of the mug, that would affect the rate of energy transfer to the coffee.

[2 marks]

(b) Energy is conducted slowly through the base of the glass mug. Explain how energy is conducted through the base of the glass mug.

[2 marks]

(c) Energy is transferred to the coffee at the bottom of the mug. Explain how a convection current is set up in the coffee.

[4 marks]

(8 marks total)