Once used up completely, non-renewable energy sources cannot be produced again.

Using natural gas for cooking is a way to conserve energy.

Solar energy plays an important role in water cycle.

The amount of sunlight received by each part of the earth remains unchanged for few days.

The energy obtained from the running water of streams and rivers

The energy sources that can be used again and again

We wear clothes and eat food according to these

It warms up the surface of the earth and causes changes in weather.

is made from seawater using solar energy.

The earth moves around the .

are built on rivers to trap energy from the running water.

light bulbs and tubes last longer and use lesser energy.