1. Sources Of Energy

2. Introduction Energy can neither be created nor destroyed.
Still there is a great demand for energy. Why.
Energy in the usable form , is dissipated to the surroundings in less usable forms.

3. Factors for a Good Source of Energy
Which would do a large amount of work per unit volume or mass,
Be easily accessible
Be easy to store and transport
Be economical

4. Conventional Sources of Energy
Fossil Fuels
Thermal Power Plant
Hydro Power Plants

5. Fossil Fuels Fossil Fuels – Coal and Petroleum .
Fossil Fuels are non renewable sources of energy .
Disadvantages of Fossil Fuels
It causes air pollution.
It causes Acid Rain.
Green House Effect.

6. How do we create electricity?

7. Thermal Power Plant
Fossil Fuels are burnt every day to heat up water to produce steam .
The steam will further turn the turbines.

8. Hydro Power Plants
Flowing water has Kinetic Energy and water at a height has Potential Energy.
Hydro Power Plants convert Potential Energy to Electricity.
Hydro Power Plants are also called Dams.

9. Disadvantages of Hydro Power Plant (Dams)
Can only be constructed in hilly terrains.
Large agricultural settlements and human habitation gets displaced.
Large ecosystems are destroyed.
It creates the problem of rehabilitation of displaced people.