Around 97% of water available on earth is________ water

(a)

fresh

(b)

pure

(c)

salty

(d)

polluted

Which of the following is not a part of water cycle?

(a)

evaporation

(b)

condensation

(c)

rain

(d)

distillation

About 30% of the fresh water is found in?

(a)

glaciers

(b)

ground water

(c)

other sources of water

(d)

0.3%

___________________ helps to regulate the temperature of our planet.

(a)

Water

(b)

Salinity

(c)

Pollutants

(d)

Industry

______________ depends on water at all levels of production.

(a)

Water

(b)

Salinity

(c)

Pollutants 

(d)

Industry

Only _____percent of natural water is available for human consumption.

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3

_________is built on rivers to regulate water flow and distribute water.

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Dams

Water cycle is also called as_______.

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hydrological cycle

The molecular formula of water is _____________.

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H₂O

Rain water forms the _______________ state.

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Liquid

The water vapour in the atmosphere forms clouds.

(a) True

(b) False

Water vapour is measured in litre and millilitre.

(a) True

(b) False

Gallon is also a measure of volume of liquids.

(a) True

(b) False

Estuaries are home to unique plants and animal species.

(a) True

(b) False

Surface water

(1)

Lake

Sun light

(2)

3.785 litre

Frozen water

(3)

Pole

Seawater

(4)

Evaporation

1 Gallon

(5)

more than 3% of salt

Name four different sources of water.

Take out of cooled bottle of water from refrigerator and keep it on a table. After some time you notice a puddle of water around it. Why?

Name the places where water is found as ice.

How do aquatic animals manage to live in Arctic and Antarctic Circle?

What are the types of rain water harvesting?

What is meant by evaporation?

What is meant by precipitation?

Differentiate between surface water and ground water.

Write a few slogans of your own on the topic “Save Water”.

Give reason for the following statement – Sewage should not be disposed of in rivers or oceans before treatment.

To clean the spectacles, people often breathe out on glasses to make them wet. Explain why do the glasses become wet.

What is potable water? List down its characteristics.

What is rainwater harvesting? Explain in a few sentences how it can be used in houses.

What are the reasons for scarcity of water?