Question

8. Why is solar energy considered a renewable
source:
9. (a) What is a solar cooker?
(b) Why is the inner surface of a solar cooker blackened?
(c) What is the function of glass sheet that covers the box in a solar cooker?
10. (a) What is a solar cell made up of?
(b) State the energy transformation that takes
place in a solar cell.
(c) Give any two uses of solar cells.
11. What is a solar panel? State its uses.
12. Give any four advantages of solar energy.
13. (a) What is wind energy?
(b) Why is wind energy considered an indirect
source of solar energy?
14. (a) What is a windmill? Give its uses.
(b) What is a windfarm?
15. How is electricity produced by a windmill?
16. Give any two advantages and two disadvantages of
wind energy.
17. What are the limitations of:
(a) solar energy
(b) wind energy?
18. (a) What is hydro electric power?
(b) Explain the mechanism of electricity generation in a hydro power station.
(c) What is the need to construct a dam over a
river in a hydro power station?
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Answer 1

Answer:

9 ans- solar cooker is device is use to energy of sunlight to heat food or drink to cook it for sterilize is called solar cooker

Explanation:

I hope you understand