EVS / Science

Air Around Us

Class 2

🎯 Learning Objectives

I can understand that air is all around us even though we cannot see it.
I can say why we need air to breathe.
I can explain what wind is.
I can say how to keep air clean.

📖 Let Us Begin!

Can you see air? No! But can you feel it? Yes! When the wind blows, you can feel air on your face.

Air is all around us. We breathe air every second. Without air, we cannot live.

Let us learn about the air around us!

Air Is Everywhere

Air is all around us. It is in our room, in the garden, in the sky, and even under water.

We cannot see air. We cannot smell clean air. But we can feel air when it moves.

How do we know air is there?

Blow into your hand. You can feel the air! Blow up a balloon. The balloon gets big because of air inside it. Shake a fan near your face. You feel the moving air.

Ravi blew up a balloon. When he let it go, the air came out and the balloon flew around the room. Air was inside the balloon!

Properties of Air

Air has some special properties that make it different from other things:

Air is everywhere — it fills every empty space around us.
We cannot see air — air is invisible, but we can feel it when it moves.
Air has no colour — clean air is completely colourless.
Air has no smell — clean air has no odour. (Smells we notice are carried by air, not the air itself.)
Air has no taste — we cannot taste clean air.
Air takes up space — blow up a balloon and it gets bigger because air fills the space inside.
Air has weight — a balloon filled with air is slightly heavier than an empty balloon.

Simple Experiment — Air Takes Up Space

Push an empty bottle into a bucket of water with the mouth facing down. You will see bubbles coming out. Those bubbles are air escaping from the bottle! This shows that air was inside the bottle, taking up space.

We Need Air to Breathe

All living things need air to breathe. People, animals, and plants all need air.

When we breathe in, we take in air. When we breathe out, we let out air. We breathe about 15 to 20 times every minute!

If we hold our breath, we feel uncomfortable very quickly. This shows how important air is.

Uses of Air

Use of Air	How It Helps
Breathing	We breathe air to live. All living things — people, animals, and plants — need air.
Birds and aeroplanes fly	Air supports the wings of birds and aeroplanes, helping them stay up in the sky.
Windmills	Moving air (wind) turns windmill blades to make electricity.
Drying clothes	Air dries our wet clothes when we hang them outside.
Seeds travel	Air carries seeds of plants like dandelion and cotton to new places, helping plants grow.
Sailing boats	Wind fills the sails of boats and pushes them across water.
Cooling us down	Moving air (breeze) cools us on a hot day.

Meena saw a dandelion flower. When she blew on it, the tiny seeds flew away in the air. Air was carrying the seeds to new places where they would grow into new plants!

Wind

When air moves, it is called wind. Wind can be gentle or strong.

A gentle wind is called a breeze. It feels nice on a hot day. A strong wind can blow away leaves and papers.

Wind helps dry our clothes. Wind helps boats sail on water. Wind turns windmills to make electricity.

Type of Wind	Description	Effect
Breeze	Gentle, soft wind	Cools us down, dries clothes, pleasant to feel
Strong wind	Fast-moving air	Blows away leaves, papers, and light objects
Storm	Very strong, dangerous wind	Can break branches, damage buildings
Cyclone	Extremely powerful rotating wind	Very dangerous, can destroy homes and flood areas

Wind Can Be Useful and Harmful

Useful: Windmills use wind to make electricity. Sailing boats use wind to move. Wind helps seeds travel. Wind dries our clothes.
Harmful: Cyclones and storms can destroy homes and crops. Strong winds can uproot trees.

Arjun flew a kite on a windy day. The wind lifted the kite high into the sky. Wind can be so much fun!

Keeping Air Clean

Clean air is good for us. Dirty air (pollution) can make us sick. It can cause coughing, breathing problems, and other illnesses.

Air gets dirty when:

Smoke comes from cars, trucks, and buses.
Factories release smoke and chemicals into the air.
People burn garbage and dry leaves.
Dust rises from roads and construction sites.

We can keep air clean by:

Planting more trees — trees absorb dirty air and give out clean, fresh air.
Avoiding burning garbage — use dustbins instead.
Using less vehicles — walk or cycle for short distances.
Factories should use filters so they do not release smoke.
Using electric vehicles that do not produce smoke.

Trees are our best friends! They take in dirty air (carbon dioxide) and give out clean, fresh air (oxygen). Let us plant more trees and protect the ones we have.

📝 Key Words

Word	Meaning
Air	The invisible gas all around us that we breathe
Breathe	To take air in and let air out of our body
Wind	Moving air
Breeze	A gentle, soft wind
Storm	A very strong, dangerous wind
Cyclone	An extremely powerful rotating wind that can cause great damage
Pollution	When air, water, or land gets dirty and harmful
Oxygen	The part of air that living things need to breathe
Windmill	A machine that uses wind to make electricity

⭐ Key Points to Remember

Air is all around us. We cannot see it but we can feel it.
Air has no colour, no smell, and no taste.
Air takes up space — a balloon gets bigger when filled with air.
All living things — people, animals, and plants — need air to live.
Moving air is called wind. A gentle wind is called a breeze.
Wind can be useful (windmills, sailing, drying clothes) and harmful (cyclones, storms).
Air helps birds and aeroplanes fly, and carries seeds to new places.
Dirty air is called air pollution. It can make us sick.
Planting trees helps keep air clean and fresh.

✏️ Practice Questions

A. Fill in the Blanks

1. Air is all us.

2. Moving air is called .

3. We cannot air but we can feel it.

4. Trees give us clean, fresh .

5. A gentle wind is called a .

6. Air has no colour, no smell, and no .

7. A very strong, dangerous rotating wind is called a .

8. Wind turns to make electricity.

B. Multiple Choice Questions

1. What is wind?

(a) Still air(b) Moving air(c) Hot air(d) Cold air

2. Which of these helps keep air clean?

(a) Burning garbage(b) Smoke from cars(c) Planting trees(d) Factory smoke

3. How do we know air is inside a balloon?

(a) The balloon gets big(b) The balloon turns red(c) The balloon gets wet(d) The balloon sinks

4. Which of these is a use of wind?

(a) Cooking food(b) Turning windmills(c) Cleaning water(d) Growing crops

5. Air helps seeds travel. Which plant's seeds travel by air?

(a) Mango(b) Dandelion(c) Potato(d) Onion

C. Short Answer Questions

1. Why do we need air?

2. What is air pollution? Name two causes.

3. Name three uses of wind.

4. Write two properties of air.

5. How can we keep air clean? Write two ways.

D. True or False

1. We can see air.

2. Air takes up space.

3. Only humans need air to breathe.

4. A cyclone is a very strong, dangerous wind.

5. Planting trees helps keep air clean.

🎨 Fun Activity -- Feel the Air!

Try these simple activities and write what you notice:

Activity	What I Noticed
Blow into your hand
Blow up a balloon
Fan your face with a book

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🎯 Learning Objectives

I can understand that air is all around us even though we cannot see it.
I can say why we need air to breathe.
I can explain what wind is.
I can say how to keep air clean.

📖 Let Us Begin!

Can you see air? No! But can you feel it? Yes! When the wind blows, you can feel air on your face.

Air is all around us. We breathe air every second. Without air, we cannot live.

Air Is Everywhere

Air is all around us — in our room, in the garden, in the sky, and even under water. We cannot see air or smell clean air, but we can feel it when it moves.

How do we know air is there?

Blow into your hand — you can feel the air! Blow up a balloon — it gets big because of air inside. Shake a fan near your face — you feel the moving air.

Ravi blew up a balloon. When he let it go, the air came out and the balloon flew around the room. Air was inside the balloon!

Properties of Air

Air is everywhere — it fills every empty space around us.
We cannot see air — air is invisible, but we can feel it when it moves.
Air has no colour — clean air is completely colourless.
Air has no smell — clean air has no odour.
Air has no taste — we cannot taste clean air.
Air takes up space — blow up a balloon and it gets bigger because air fills the space inside.
Air has weight — a balloon filled with air is slightly heavier than an empty balloon.

Simple Experiment — Air Takes Up Space

Push an empty bottle into a bucket of water with the mouth facing down. You will see bubbles coming out. Those bubbles are air escaping from the bottle — air was inside, taking up space!

We Need Air to Breathe

All living things need air to breathe — people, animals, and plants. When we breathe in, we take in air. When we breathe out, we let out air. We breathe about 15 to 20 times every minute! If we hold our breath, we feel uncomfortable very quickly. This shows how important air is.

Uses of Air

Use of Air	How It Helps
Breathing	We breathe air to live. All living things need air.
Birds and aeroplanes fly	Air supports wings, helping them stay up in the sky.
Windmills	Moving air (wind) turns windmill blades to make electricity.
Drying clothes	Air dries our wet clothes when we hang them outside.
Seeds travel	Air carries seeds of plants like dandelion to new places.
Sailing boats	Wind fills the sails of boats and pushes them across water.
Cooling us down	Moving air (breeze) cools us on a hot day.

Meena saw a dandelion flower. When she blew on it, the tiny seeds flew away in the air. Air was carrying the seeds to new places where they would grow into new plants!

Wind

When air moves, it is called wind. A gentle wind is called a breeze. Wind can be useful and harmful.

Type of Wind	Description	Effect
Breeze	Gentle, soft wind	Cools us down, dries clothes, pleasant to feel
Strong wind	Fast-moving air	Blows away leaves, papers, and light objects
Storm	Very strong, dangerous wind	Can break branches, damage buildings
Cyclone	Extremely powerful rotating wind	Very dangerous, can destroy homes and flood areas

Arjun flew a kite on a windy day. The wind lifted the kite high into the sky. Wind can be so much fun!

Keeping Air Clean

Clean air is good for us. Dirty air (pollution) can make us sick — causing coughing and breathing problems.

Air gets dirty when:

Smoke comes from cars, trucks, and buses.
Factories release smoke and chemicals into the air.
People burn garbage and dry leaves.
Dust rises from roads and construction sites.

We can keep air clean by:

Planting more trees — trees absorb dirty air and give out clean, fresh air.
Avoiding burning garbage — use dustbins instead.
Using less vehicles — walk or cycle for short distances.
Factories should use filters so they do not release smoke.
Using electric vehicles that do not produce smoke.

Trees are our best friends! They take in dirty air (carbon dioxide) and give out clean, fresh air (oxygen). Let us plant more trees and protect the ones we have.

📝 Key Words

Word	Meaning
Air	The invisible gas all around us that we breathe
Wind	Moving air
Breeze	A gentle, soft wind
Storm	A very strong, dangerous wind
Cyclone	An extremely powerful rotating wind that can cause great damage
Pollution	When air, water, or land gets dirty and harmful
Oxygen	The part of air that living things need to breathe
Windmill	A machine that uses wind to make electricity

⭐ Key Points to Remember

Air is all around us. We cannot see it but we can feel it.
Air has no colour, no smell, and no taste.
Air takes up space — a balloon gets bigger when filled with air.
All living things — people, animals, and plants — need air to live.
Moving air is called wind. A gentle wind is called a breeze.
Wind can be useful (windmills, sailing, drying clothes) and harmful (cyclones, storms).
Air helps birds and aeroplanes fly, and carries seeds to new places.
Dirty air is called air pollution. It can make us sick.
Planting trees helps keep air clean and fresh.

A. Fill in the Blanks

1. Air is all us.

2. Moving air is called .

3. We cannot air but we can feel it.

4. Trees give us clean, fresh .

5. A gentle wind is called a .

6. Air has no colour, no smell, and no .

7. A very strong, dangerous rotating wind is called a .

8. Wind turns to make electricity.

B. Multiple Choice Questions

1. What is wind?

(a) Still air(b) Moving air(c) Hot air(d) Cold air

2. Which of these helps keep air clean?

(a) Burning garbage(b) Smoke from cars(c) Planting trees(d) Factory smoke

3. How do we know air is inside a balloon?

(a) The balloon gets big(b) The balloon turns red(c) The balloon gets wet(d) The balloon sinks

4. Which of these is a use of wind?

(a) Cooking food(b) Turning windmills(c) Cleaning water(d) Growing crops

5. Air helps seeds travel. Which plant's seeds travel by air?

(a) Mango(b) Dandelion(c) Potato(d) Onion

C. True or False

1. We can see air.

2. Air takes up space.

3. Only humans need air to breathe.

4. A cyclone is a very strong, dangerous wind.

5. Planting trees helps keep air clean.

D. Short Answer Questions

1. Why do we need air?

2. What is air pollution? Name two causes.

3. Name three uses of wind.

4. Write two properties of air.

5. How can we keep air clean? Write two ways.

🎨 Fun Activity — Feel the Air!

Try these simple activities and write what you notice:

Activity	What I Noticed
Blow into your hand
Blow up a balloon
Fan your face with a book

You are viewing the Worksheet layout. Click Print to save as PDF or print on A4 paper.

Air Around Us

🎯 Learning Objectives

📖 Let Us Begin!

Air Is Everywhere

Properties of Air

We Need Air to Breathe

Uses of Air

Wind

Keeping Air Clean

📝 Key Words

✏️ Practice Questions

Air Around Us

Air Around Us (continued)

Air Around Us — Practice Questions