Question

Write the uses of heat energy and light energy.

Answer 1

Uses of heat energy:

1. Heat energy obtained from power stations is used to generate electricity.
2. Heat energy obtained from petrol and diesel is used to run vehicles.
3. We cook food with the help of heat. Heat energy renders the food material soft and easy to digest.
4. Hard substances like iron are heated to mold them into different shapes.
5. Heat is used to dry clothes and other wet substances.

Uses of light energy:

1. We are able to see objects with the help of light energy.
2. Plants use light energy to synthesis their food.
3. With the help of light energy, our skin is able to synthesis Vitamin-D.
4. Electricity can be produced with the help of light energy.