The diagram below shows a solar cooker being used to warm water.

1. aName the heat transfer method by which solar energy from the sun travels to the solar cooker on earth. [1]
2. bExplain how it is helpful that the pot is made black in colour. [1]
3. cSuggest a suitable colour for the reflecting surface. [1]
4. dExplain why it is important for the pot to be covered with a lid when the water is heated. [2]
5. eGive one advantage of using solar energy instead of firewood to heat the water. [1]

You'll mark your own answer against the marking guide when you hand it in.