UNIT 4 ENERGY TRANSFORMATION

Energy never disappears. It can be transformed from one type of energy into another, but it doesn’t disappear completely.

Chemical energy: Vehicles transform the chemical energy in fuel and petrol into mechanical and thermal energy by the engine. We also transform chemical energy from the food into heat and movement.

Electrical energy: Machines transform electrical energy into kinetic and thermal energy. 

Light energy: Solar panels transform light energy from the Sun into electrical energy. 

The energy in food: The chemical energy stored in food and drink is measured in calories. The more calories in food, the more energy it contains.