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1 markTemperature Control and Ventilation

CSEC Integrated Science · 2009 · Paper 2 · Question 4(c)(iii)

A simple solar water heater consists of an open metal box painted black on the exterior.

Would you expect to find hotter water at the top or at the bottom of the heater?

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Other parts of this question

  1. 4(a)(i)List the physical states of the materials usually present in Section A.[1 mark]
  2. 4(a)(ii)Name the process occurring in each of the labelled sections: B and C.[2 marks]
  3. 4(a)(iii)The distillation flask contains liquids W (b.p. 180 °C), X (b.p. 60 °C) and Y (b.p. 100 °C). Which will be collected in the receiver first?[1 mark]
  4. 4(b)(i)State one major environmental concern associated with using fossil fuels.[1 mark]
  5. 4(b)(ii)State one reason which may limit the use of solar energy in the Caribbean.[1 mark]
  6. 4(c)(i)Which method of heat transfer is most important for this solar water heater to operate?[1 mark]
  7. 4(c)(ii)Why did the builder paint the exterior of the water heater black?[1 mark]
  8. 4(c)(iv)Give one reason for your answer to (c)(iii).[1 mark]
  9. 4(c)(v)a)Should the covering for the water heater be made from metal, transparent glass or plastic?[1 mark]
  10. 4(c)(v)b)Give one reason for your choice of covering material in (v) a).[1 mark]
  11. 4(c)(vi)Suggest one appropriate use of the water from the solar water heater.[1 mark]
  12. 4(c)(vii)Suggest two reasons for using a solar water heater instead of a gas heater or an electric heater.[2 marks]

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