Identify the incorrect statement/s about solar panels.

(i) The running costs of solar panels is very high.

(ii) They do not cause any pollution.

(iii) They last over a long period of time.

1. (i)
2. (ii)
3. (iii)
4. (i) and (iii)

The non-renewable sources of energy are :

1. Coal
2. Petroleum
3. Natural gas
4. All of the above

Select the renewable and non-renewable sources of energy from the following —

(a) Coal
(b) Wood
(c) Water
(d) Diesel
(e) Wind
(f) Oil

What is the main source of energy for the earth?