Physics-Chapter 3: Sources of Energy

All our everyday activities use energy in one form or another. Without energy, we cannot drive cars, run machines in factories or even cook food! This chapter discusses where exactly different types of energy come from.

Non-Renewable Source

Non-Renewable Source

Sources of energy that have accumulated in nature over a long period of time and cannot be quickly replaced once exhausted.

For example: Petrol, Coal

Renewable Source

Sources of energy that are being produced continuously in nature and are inexhaustible.

For example: Hydro-energy, Wind energy

Conventional Source of Energy

Traditional sources of energy which are familiar to most people. For example: Wood, Fossil Fuels

Alternative/Non-Conventional Source of Energy

Sources of energy which are not traditionally used. For example: Hydroelectric Energy, Tidal Energy