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1 markTemperature Control and Ventilation

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

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

Define what a 'thermostat' is.

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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)(ii)Complete Table 2 by writing the effect of EACH action indicated on the flow of electric current through the iron.[4 marks]
  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