Solution of Chapter 14. Water (NCERT - Science Exemplar Book)

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

In which of the following activities will you use minimum amount of water?

The quantity of water required to produce one page of your book is

Water in our tap comes from

In which of the following case evaporation of water will be slowest?

Transpiration is a process in which plants

Clouds are

Wells are fed by

Floods cause extensive damage to

“Catch water where it falls” is the basic idea behind

Look at Fig. 14.1.

Write down activities shown in this figure in which water is being used.

Write any two activities which require more than a bucket of water.

Write any two activities which require less than one bucket of water.

Why do wet clothes placed on a clothes line get dry after some time? Explain.

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

How do the areas covered with concrete affect the availability of ground water?

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

Fill in the blanks selecting words from the following list- snow, rain, clouds, vapour, evaporation, transpiration.

Water, as _____ goes into atmosphere by the processes of ______ and _____ and forms ________, which on condensation fall in the form of ______ and _______.

Most of the water that falls on the land as rain and snow, sooner or later goes back to a sea or an ocean. Explain how it happens?

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

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?

Explain the process of rooftop rain water harvesting with the help of a suitable diagram.