Quelpr
4 marksTemperature Control and Ventilation

CSEC Integrated Science · 2007 · Paper 2 · Question 5(b)(ii)

Figure 7 shows a bimetallic strip used in a thermostat of an electric iron.

Complete Table 2 by writing the effect of EACH action indicated on the flow of electric current through the iron.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 5(a)In the frame provided in Figure 6, draw what the bimetallic strip would look like when heated. Label A and B on your diagram.[2 marks]
  2. 5(b)(i)Define what a 'thermostat' is.[1 mark]
  3. 5(c)(i)Suggest the method of heat transfer from the hot iron to the metal rest on the ironing board.[1 mark]
  4. 5(c)(ii)Suggest the method of heat transfer from the hot iron to an unlit candle wax placed near but not touching it.[1 mark]
  5. 5(d)Explain what is meant by 'ventilation'.[2 marks]
  6. 5(e)(i)Complete Table 3 to show the specific cause of EACH observed effect of poor ventilation.[3 marks]
  7. 5(e)(ii)State ONE way in which the ventilation in the room might be improved.[1 mark]

More practice: the rest of this paper · more Temperature Control and Ventilation questions · all CSEC Integrated Science past papers