3rd Grade ICSE

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09. Water As A Resource

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Last edited 37 days ago by Learn LoopHQ.

Chapter: 09. Water As A Resource

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We use water for several purposes, such as drinking, cleaning, washing and _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

cooking

Water exists in three different forms: solid, liquid and _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

gas

In the process of evaporation, a liquid changes into vapour (gas) on _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

heating

When water vapour in the air cools down, tiny droplets of water are formed. The water droplets combine to form _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

clouds

The continuous cycle by which water circulates, by the processes of evaporation, condensation and precipitation, is known as the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

water cycle

Impurities that are dissolved in water and cannot be seen easily are called _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ impurities.

soluble

Very tiny and harmful living organisms in water that cannot be seen but can cause diseases are called _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

germs

Potable water is water that is fit for _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

drinking

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ is a place where water is purified and made drinkable.

Waterworks

Water must be boiled for at least _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ minutes to make it safe for drinking.

Cholera, typhoid and dysentery are examples of _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ diseases.

waterborne

The process of purifying drinking water with the help of chlorine tablets is called _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

chlorination

Rainwater harvesting is the collection and storage of rainwater for _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ use.

future

Rainwater harvesting can also be done by making tanks and _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

check dams

About _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ percent of the Earth's surface is covered with water.

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