In our country, most of the rainfall occurs during the ________ season.

Dew is found on leaves of grass on _________ .

Water cycle helps in regulating the _____ on earth.

The rainwater can be used to ________ groundwater.

State for each of the following whether it is due to evaporation or condensation. Fog appearing in a cold winter morning.

What happens if it does not rain for a long period?

How much water is required to produce each page of a book?

Human body also contains water. What is the percentage of water in human body?

Rainwater harvesting is done to conserve water but what is the main purpose of rainwater harvesting?

A process by which rainwater is made to percolated into the ground is used to conserve water. What is this process called?

Groundwater should be used judiciously. Why?

What makes the fresh rainwater become saline after reaching earth's surface?

Animals like fish in shallow pond die in certain conditions. What are these conditions?

Why is there a need for conserving water? Give two reasons.

Water kept in sunlight gets heat from the sun and is evaporated. But how does water kept under the shade of a tree also gets evaporated? Explain.

Dissolve two spoons of common salt in half a cup of water. Now, if you want to get the salt back, what will you do?

Draw a diagram to show how sea water reaches a lake or pond?

Wells are fed by

Which of these is a result of condensation of water vapours?

Which one is a process involving change of water into vapours in atmosphere?

Transpiration is a process in which plants

Which of the following activities does not involve use of water?

Pucca drains from the roadside allow water to go into the ground.

Sunlight is essential to convert water into its vapours.

We should conserve water for future.

Circulation of water in the environment is known as water cycle.

Water vapour enters into air through evaporation.