NCERT Solutions for Class 2 Science Chapter 10 Water

All living things need water. We need water daily for many purposes.
1. We need water for drinking.
2. We need water for bathing.
3. We need water for cooking.
4. We need water for cleaning.
5. We need water for washing clothes.
6. We need water for putting out fire.

Animals and plants also need water. Animals need water for drinking and bathing. Plants need water for growing.

Drinking water should be clean and pure. Dirty water contains germs. Germs can make us sick. We can kill the germs by boiling water for 20 minutes. We can also use water filter to remove germs.

We get water from ponds, lakes and rivers. When it rains, water fills up ponds, lakes and rivers. Rainwater also goes below the ground. This water is called groundwater. We get groundwater through wells, hand pumps or tube wells. In big cities, people get water from taps.

Water that we get from ponds, lakes and rivers is not fit for drinking. It contains dirt and germs. If we drink this water, it may make us sick.

Water becomes impure and dirty when:
1. people throw rubbish into the ponds, lakes or rivers;
2. people wash clothes there;
3. factories release dirty water into them.

Impure water is very harmful for our health. We should not use water of the ponds, lakes or rivers for drinking.

Water is very important for men, animals and plants. We should not waste it. We should save it. Useful tips to

We can save water by:
1. Turn off the tap when it is not in use.
2. Use shower for a short time.
3. Do not throw away leftover water of your water bottle. You can use it to water the plants.
4. Collect rainwater in buckets. You can use it for washing and cleaning.

Water is found in three forms:
1. Liquid
2. Ice
3. vapour

Water changes its forms continuously in nature. This process is called water cycle. Heat of the sun turns the water of rivers, lakes and sea into water vapours. Again these water vapours change into tiny droplets. When water droplets become heavy, they fall on the earth in the form of rain. This water again goes into the rivers and lakes. The heat of the sun turns water of rivers, lakes and sea again into water vapours.

1. All living things need water to live.
2. We get water from rain, lakes, ponds, rivers, wells and hand pumps.
3. For drinking purpose, we should Always, use pure and clean water.
4. Water is found in three forms– ice, water and water vapour.
5. We use water for drinking, bathing, cooking, cleaning and washing.
6. We get water from ponds, lakes and rivers.
7. Water is very important. We should save it

1. Tap-water is ______ to drink. (safe/unsafe)
2. Ice is the ______ form of water. (solid/liquid)
3. Dirty water contains ______. (germs/medicines)
4. Plants need water for ______. (bathing/growing)

Answers:
1. unsafe
2. solid
3. germs
4. growing

Three source of water: River, lake, pond.

Three forms of water: liquid, solid, vapour.

We need water for various purpose.
1. We need water for drinking.
2. We need water for bathing.
3. We need water for cooking.
4. We need water for cleaning.
5. We need water for washing clothes.
6. We need water for putting out fire.