The largest inexhaustible source of energy

1. Solar
2. Wind
3. Tidal
4. Waves

It is not an advantage of solar energy

1. No pollution
2. Little maintenance
3. Indefinitely renewable
4. Quite expensive

Fill in the blanks:

(a) Fossil fuel are found in …………… rocks.

(b) Coal is a …………… power resource.

(c) Wind energy is used for …………… .

(d) Solar energy is …………… source of energy.

(e) Coal is a …………… source of energy.

Differentiate between renewable and non-renewable sources of power.