Distinguish between Conventional and Non- Conventional sources of energy.
| Conventional Sources of Energy | Non- Conventional Sources of Energy |
| These sources have been in common use since a long time. | These sources have recently come into use |
| These are non- renewable sources of energy These are Exhaustible These sources create pollution. | These are renewable sources of energy These are Inexhaustible These sources do not create pollution. |
| Examples: Firewood, coal, petroleum, etc. | Examples: solar energy, tidal energy, nuclear energy, etc. |