EVS / Science

Water

Class 2

🎯 Learning Objectives

I can say how we use water every day.
I can name the sources of water.
I can tell the difference between clean water and dirty water.
I can say how to save water.

📖 Let Us Begin!

Water is very important. We cannot live without water. We drink water, cook with water, and bathe with water.

Plants and animals also need water to live. Water is a precious gift of nature.

Let us learn about water!

Uses of Water

We use water in many ways every day. Can you think of all the ways you used water today?

Use	How We Use It
Drinking	We drink water to stay healthy. Our body needs water to work properly.
Cooking	We cook rice, dal, and vegetables using water. We boil water to make tea and soup.
Bathing	We bathe with water to keep our body clean and fresh.
Washing clothes	We wash our clothes with water and soap to remove dirt.
Watering plants	Plants need water to grow. We water them every day.
Putting out fires	Firefighters use water to put out fires and save lives.
Swimming	We swim in pools, rivers, and the sea for fun and exercise.

Sita counted how many times she used water in one morning. She drank water, brushed her teeth, bathed, and helped water the plants. Water is used so many times!

Sources of Water

Where does water come from? Here are the main sources:

Source	About It
Rain	Rain falls from clouds. It fills rivers, ponds, and wells. Rain is the main source of all water on Earth.
Rivers	Rivers carry water from mountains to the sea. The Ganga, Yamuna, and Brahmaputra are major rivers of India. We get water from rivers.
Well	Water is found under the ground. We dig wells to get this groundwater. Many villages use wells.
Ponds and Lakes	Ponds and lakes collect rainwater. Animals drink from them. Farmers use pond water for crops.
Tap / Pipe	Water is treated at a water plant to make it clean, then piped to our homes through taps.

The Ganga is the longest river in India. Millions of people depend on it for water. We must keep our rivers clean!

Clean Water and Dirty Water

Clean water is safe to drink. It has no colour, no smell, and no taste. We get clean water from taps and filtered water.

Dirty water has mud, germs, or waste in it. We should never drink dirty water. It can cause serious diseases like cholera and typhoid.

Clean Water	Dirty Water
Clear and transparent	Muddy or cloudy
No smell	Has a bad smell
No taste	May taste bad
Safe to drink	Not safe to drink
From filtered tap or well	From dirty pond or drain

How to make water safe to drink:

1. Boil the water for at least 5 minutes to kill germs.
2. Use a water filter to remove dirt and germs.
3. Use water purification tablets when travelling.
4. Always store drinking water in a clean, covered container.

Always drink boiled or filtered water. If water looks muddy or smells bad, do not drink it!

How to Save Water

Water is precious. There is only a limited amount of clean water on Earth. We must not waste it. Here is how we can save water:

Close the tap while brushing your teeth.
Use a bucket instead of a shower — it uses much less water.
Water plants in the morning or evening, not in the hot afternoon (water evaporates quickly in heat).
Fix leaking taps — a dripping tap wastes hundreds of litres every day!
Collect rainwater in a bucket or tank to water plants.
Do not play with water or leave taps running.
Use a mug to wash utensils instead of running water.

Did You Know?

A leaking tap can waste up to 20 litres of water every day. That is enough water for a person to drink for 10 days! Always tell an adult if you see a leaking tap.

Ravi's family started collecting rainwater in a big drum. They used it to water their garden. This is called rainwater harvesting. It is a great way to save water!

📝 Key Words

Word	Meaning
Source	The place where something comes from
Clean water	Water that is safe to drink — no colour, smell, or dirt
Dirty water	Water with mud, germs, or waste — not safe to drink
Save water	To use water carefully and not waste it
Precious	Very important and valuable
Groundwater	Water found under the ground, reached by digging wells
Rainwater harvesting	Collecting and storing rainwater for later use
Cholera / Typhoid	Diseases caused by drinking dirty water
Filter	A device that removes dirt and germs from water

⭐ Key Points to Remember

Water is very important. We cannot live without water.
We use water for drinking, cooking, bathing, washing, and watering plants.
Water comes from rain, rivers, wells, ponds, and taps.
The Ganga, Yamuna, and Brahmaputra are major rivers of India.
Clean water is clear, tasteless, and odourless. Always drink boiled or filtered water.
Dirty water can cause diseases like cholera and typhoid.
We must save water — close taps, use buckets, fix leaks, collect rainwater.

✏️ Practice Questions

A. Fill in the Blanks

1. We cannot live without .

2. Rain falls from .

3. We should always drink water.

4. We should close the when not using water.

5. Dirty water can cause diseases like and typhoid.

6. The , Yamuna, and Brahmaputra are major rivers of India.

7. Collecting rainwater for later use is called rainwater .

B. Multiple Choice Questions

1. Which is a source of water?

(a) Sun(b) River(c) Wind(d) Soil

2. What should we do to save water?

(a) Leave taps open(b) Take long baths(c) Close taps when not using(d) Waste water

3. Clean water has __________.

(a) Mud in it(b) Bad smell(c) No colour or smell(d) Germs

4. Which disease is caused by drinking dirty water?

(a) Cold(b) Cholera(c) Fever(d) Headache

5. Water found under the ground is called:

(a) Rainwater(b) River water(c) Groundwater(d) Sea water

C. Short Answer Questions

1. Name three ways we use water every day.

2. What is the difference between clean water and dirty water?

3. Write three ways to save water.

4. Name two major rivers of India.

5. Why should we not drink dirty water?

D. True or False

1. We can live without water.

2. Clean water has no colour, smell, or taste.

3. A leaking tap wastes water.

4. Rain fills rivers and ponds.

5. We should use a shower instead of a bucket to save water.

🎨 Fun Activity -- Water Watcher

For one day, count how many times you use water. Write it in the table below.

How I Used Water	How Many Times?
Drinking
Washing hands
Bathing
Brushing teeth

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Learning Objectives

I can say how we use water every day.
I can name the sources of water.
I can tell the difference between clean water and dirty water.
I can say how to save water.

Let Us Begin!

Water is very important. We cannot live without water. We drink water, cook with water, and bathe with water.

Plants and animals also need water to live. Water is a precious gift of nature.

Let us learn about water!

Uses of Water

We use water in many ways every day. Can you think of all the ways you used water today?

Use	How We Use It
Drinking	We drink water to stay healthy. Our body needs water to work properly.
Cooking	We cook rice, dal, and vegetables using water. We boil water to make tea and soup.
Bathing	We bathe with water to keep our body clean and fresh.
Washing clothes	We wash our clothes with water and soap to remove dirt.
Watering plants	Plants need water to grow. We water them every day.
Putting out fires	Firefighters use water to put out fires and save lives.
Swimming	We swim in pools, rivers, and the sea for fun and exercise.

Sita counted how many times she used water in one morning. She drank water, brushed her teeth, bathed, and helped water the plants. Water is used so many times!

Sources of Water

Where does water come from? Here are the main sources:

Source	About It
Rain	Rain falls from clouds. It fills rivers, ponds, and wells. Rain is the main source of all water on Earth.
Rivers	Rivers carry water from mountains to the sea. The Ganga, Yamuna, and Brahmaputra are major rivers of India.
Well	Water is found under the ground. We dig wells to get this groundwater. Many villages use wells.
Ponds and Lakes	Ponds and lakes collect rainwater. Animals drink from them. Farmers use pond water for crops.
Tap / Pipe	Water is treated at a water plant to make it clean, then piped to our homes through taps.

The Ganga is the longest river in India. Millions of people depend on it for water. We must keep our rivers clean!

Clean Water and Dirty Water

Clean water is safe to drink. It has no colour, no smell, and no taste. We get clean water from taps and filtered water.

Dirty water has mud, germs, or waste in it. We should never drink dirty water. It can cause serious diseases like cholera and typhoid.

Clean Water	Dirty Water
Clear and transparent	Muddy or cloudy
No smell	Has a bad smell
No taste	May taste bad
Safe to drink	Not safe to drink
From filtered tap or well	From dirty pond or drain

How to make water safe to drink:

Always drink boiled or filtered water. If water looks muddy or smells bad, do not drink it!

How to Save Water

Water is precious. There is only a limited amount of clean water on Earth. We must not waste it. Here is how we can save water:

Close the tap while brushing your teeth.
Use a bucket instead of a shower — it uses much less water.
Water plants in the morning or evening, not in the hot afternoon.
Fix leaking taps — a dripping tap wastes hundreds of litres every day!
Collect rainwater in a bucket or tank to water plants.
Do not play with water or leave taps running.
Use a mug to wash utensils instead of running water.

Did You Know?

A leaking tap can waste up to 20 litres of water every day. That is enough water for a person to drink for 10 days! Always tell an adult if you see a leaking tap.

Ravi's family started collecting rainwater in a big drum. They used it to water their garden. This is called rainwater harvesting. It is a great way to save water!

Key Words

Word	Meaning
Source	The place where something comes from
Clean water	Water that is safe to drink — no colour, smell, or dirt
Dirty water	Water with mud, germs, or waste — not safe to drink
Save water	To use water carefully and not waste it
Precious	Very important and valuable
Groundwater	Water found under the ground, reached by digging wells
Rainwater harvesting	Collecting and storing rainwater for later use
Cholera / Typhoid	Diseases caused by drinking dirty water
Filter	A device that removes dirt and germs from water

⭐ Key Points to Remember

Water is very important. We cannot live without water.
We use water for drinking, cooking, bathing, washing, and watering plants.
Water comes from rain, rivers, wells, ponds, and taps.
The Ganga, Yamuna, and Brahmaputra are major rivers of India.
Clean water is clear, tasteless, and odourless. Always drink boiled or filtered water.
Dirty water can cause diseases like cholera and typhoid.
We must save water — close taps, use buckets, fix leaks, collect rainwater.

A. Fill in the Blanks

1. We cannot live without .

2. Rain falls from .

3. We should always drink water.

4. We should close the when not using water.

5. Dirty water can cause diseases like and typhoid.

6. The , Yamuna, and Brahmaputra are major rivers of India.

7. Collecting rainwater for later use is called rainwater .

B. Multiple Choice Questions

1. Which is a source of water?

(a) Sun(b) River(c) Wind(d) Soil

2. What should we do to save water?

(a) Leave taps open(b) Take long baths(c) Close taps when not using(d) Waste water

3. Clean water has __________.

(a) Mud in it(b) Bad smell(c) No colour or smell(d) Germs

4. Which disease is caused by drinking dirty water?

(a) Cold(b) Cholera(c) Fever(d) Headache

5. Water found under the ground is called:

(a) Rainwater(b) River water(c) Groundwater(d) Sea water

C. Short Answer Questions

1. Name three ways we use water every day.

2. What is the difference between clean water and dirty water?

3. Write three ways to save water.

4. Name two major rivers of India.

5. Why should we not drink dirty water?

D. True or False

1. We can live without water.

2. Clean water has no colour, smell, or taste.

3. A leaking tap wastes water.

4. Rain fills rivers and ponds.

5. We should use a shower instead of a bucket to save water.

🎨 Fun Activity — Water Watcher

For one day, count how many times you use water. Write it in the table below.

How I Used Water	How Many Times?
Drinking
Washing hands
Bathing
Brushing teeth

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Water

🎯 Learning Objectives

📖 Let Us Begin!

Uses of Water

Sources of Water

Clean Water and Dirty Water

How to Save Water

📝 Key Words

✏️ Practice Questions

WATER

WATER (continued)

WATER — Practice Questions