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Revision Notes

Class 6

Science

Chapter 15 Air Around Us

Air Around Us Class 6 Science Chapter 15 CBSE Notes - 2025-26

Q: 3. What are the key uses of air to remember for a quick revision of this chapter?

For a quick revision, focus on these essential uses of air:It is necessary for breathing (respiration) in all living organisms.It supports combustion or burning.Moving air, or wind, helps in the movement of sailboats and powers windmills to generate electricity.The presence of air allows birds, bats, and insects to fly.

Q: 5. Why is it important to understand that air is a mixture, not a compound, when revising this chapter?

Understanding air as a mixture is a key concept because its components are not chemically bonded and retain their individual properties. This explains why we can separate gases from it and why different components, like oxygen for breathing and carbon dioxide for photosynthesis, can be used for different functions simultaneously. This is a core idea in the "Air Around Us" notes.

Science Notes for Chapter 15 Air Around Us Class 6 - FREE PDF Download

In Cbse Class 6 Science Notes Chapter 15, you’ll discover everything about the air around us—what it’s made of, why we need it, and how it helps every living thing. This chapter makes it easy to understand topics like the atmosphere, the importance of air for breathing, and even how plants and animals depend on it. To prepare better, check the Class 6 Science Syllabus for all updated topics covered this year.

Sometimes, students feel confused about the different gases in air or how air helps in burning and breathing. Don’t worry—these notes from Vedantu are made to clear your doubts, giving you simple explanations and examples. Revising gets much easier when you use our helpful Class 6 Science Revision Notes.

This chapter is important because questions from it appear often in CBSE exams and help you score well. Understanding it well gives you a good base for science not only in this class, but also in higher classes.

Access Class 6 Science Chapter 15 - Air Around Us Notes

Air is an invisible gaseous material that surrounds the earth and is primarily composed of oxygen and nitrogen.

Atmosphere refers to the blanket of air that surrounds the world.
Air can be found in all places. Although we cannot see air, we can feel it.
The wind is the movement of air.
Air takes up space and is found in water and dirt.
Nitrogen, oxygen, carbon dioxide, water vapour, and a few more gases make up air. It may also contain some dust particles.
Life on Earth depends on the atmosphere.
Aquatic species breathe dissolved air in water, and plants and animals rely on each other for oxygen and carbon dioxide exchange from the air.

Different Layers of Atmosphere:

Troposphere
Stratosphere
Mesosphere
Thermosphere

Constituent of Air:

The main components of air are nitrogen and oxygen. Nitrogen makes up about 78 per cent of the air we breathe. Nearly 21% of the air is made up of oxygen. Carbon dioxide, water vapour, dust particles, and other gases make up the remaining 1%. The composition of gases in the air varies by location.

Nitrogen: Plants require nitrogen in order to grow.
Oxygen: All living things use oxygen to breathe and to help them burn food.
Carbon Dioxide: During respiration, plants and animals absorb oxygen and create carbon dioxide. Photosynthesis is carried out by green plants. It is emitted when you burn something.
Water Vapour: Water vapour is formed when water evaporates. Humidity refers to the amount of water vapour in the air. Variates from place to place, as well as during the day and night in the same location.
Dust and Smoke: Smoke comprises a small number of gases as well as fine dust particles. It is really dangerous. The number of dust particles in the air changes throughout time and from location to place.

Importance of Air:

Burning is aided by the presence of air.
Breathing necessitates the presence of air.
Plants require air to produce food.
Birds fly across the air. Air pressure also causes planes to rise in the air.
The wind is the term for moving air. The windmill rotates because of the wind.
Air helps in the rapid evaporation of sweat, which keeps us cool.

Chapter Summary - Air Around Us

In Class 6 Science Chapter 15, Air Around Us, we embark on an exciting journey to understand the invisible yet powerful force of air. Discovering its properties and composition, students learn how air surrounds us and influences weather phenomena. Engaging activities and relatable examples make learning about the atmosphere fun. From exploring the importance of air for living beings to understanding its role in various natural processes, this chapter creates a breeze of knowledge. With clear explanations and interactive learning, students develop a newfound appreciation for the air around us, realizing its significance in sustaining life on Earth.

Benefits of Referring to Vedantu’s Revision Notes for Class 6 Science Chapter 15 - Air Around Us

Step into the world of Vedantu's Revision Notes for Class 6 Science Chapter 15 - Air Around Us! Like a gentle breeze guiding your learning, these notes are designed to make the invisible world of air not only understandable but also fascinating.

1. Quick Summaries:

Glide through the complexities of air with quick summaries, capturing the essence of key concepts like a refreshing breath of knowledge.

2. Simplified Complexity:

Much like unraveling a gentle breeze, these notes simplify intricate topics, ensuring that understanding the nuances of Air Around Us becomes a breeze for every student.

3. Efficient Last-Minute Prep:

Just as the wind swiftly prepares the atmosphere for change, these notes efficiently ready you for exams, making last-minute preparations effective and stress-free.

4. Enhanced Retention:

Picture a pocket of air holding essential information—Vedantu's Revision Notes help you grasp and retain crucial details, ensuring a strong foundation in understanding the chapter.

5. Exam Preparation Support:

Sail smoothly through exam preparation with key points and tips, acting as your compass in the atmospheric sea of knowledge about Air Around Us.

6. Time-Saving Consolidation:

Much like a weather forecast consolidates information, these notes save time by presenting important details in one place, streamlining your study process.

7. Prioritizes Important Topics and Questions:

Navigate through the atmospheric layers of information with ease, as these notes prioritize important topics and questions, ensuring your focus on the essential aspects of Air Around Us.

Conclusion

For an enhanced comprehension of this subject, NCERT - Class 6 Science Chapter 15 - Air Around Us, thoughtfully prepared by experienced educators at Vedantu is your invaluable companion. These notes break down the complexities of “Air Around Us” into easily digestible sections, helping you grasp new concepts and navigate through questions effortlessly and quickly at the last minute as well. By immersing yourself in these notes, you not only prepare for your studies more efficiently but also develop a profound understanding of the subject matter.

FAQs on Air Around Us Class 6 Science Chapter 15 CBSE Notes - 2025-26

1. What is the composition of air as summarised in the Class 6 notes for Chapter 15?

The revision notes for "Air Around Us" explain that air is a mixture of gases. The primary components are Nitrogen (about 78%) and Oxygen (about 21%). The remaining 1% includes small amounts of carbon dioxide, water vapour, dust particles, and other gases like argon.

2. How can you quickly summarise the key properties of air from the revision notes?

A quick summary of air's properties, based on the chapter notes, includes:

Air is everywhere: It fills all apparently empty spaces around us.
Air is transparent: We can see through it, which is why it appears invisible.
Air occupies space: An experiment like submerging an inverted glass in water shows that air takes up space.
Air has weight: A balloon filled with air weighs more than an empty one, proving it has mass.

3. What are the key uses of air to remember for a quick revision of this chapter?

For a quick revision, focus on these essential uses of air:

It is necessary for breathing (respiration) in all living organisms.
It supports combustion or burning.
Moving air, or wind, helps in the movement of sailboats and powers windmills to generate electricity.
The presence of air allows birds, bats, and insects to fly.

4. According to the revision notes, how is the oxygen in the atmosphere continuously replaced?

The notes for Class 6, Chapter 15 highlight a crucial natural cycle. The oxygen consumed by animals and humans for respiration and by burning processes is replenished by plants and trees. They release oxygen during the process of photosynthesis, maintaining this vital balance in the atmosphere.

5. Why is it important to understand that air is a mixture, not a compound, when revising this chapter?

Understanding air as a mixture is a key concept because its components are not chemically bonded and retain their individual properties. This explains why we can separate gases from it and why different components, like oxygen for breathing and carbon dioxide for photosynthesis, can be used for different functions simultaneously. This is a core idea in the "Air Around Us" notes.

6. How do the concepts of 'air supports burning' and 'air's composition' link together in the revision notes?

The revision notes connect these two ideas by explaining that it's a specific component of air, Oxygen, that supports burning. Without the 21% oxygen in the air's composition, combustion as we know it would not happen. So, the property of supporting combustion is a direct result of air's specific mixture of gases.

7. How can a student create a concept map to quickly revise the 'Air Around Us' chapter?

To create a revision concept map for this chapter, start with the central topic "Air Around Us". Branch out to main ideas like "Composition," "Properties," and "Uses." Under "Composition," list the key gases like Nitrogen and Oxygen with their percentages. Under "Properties," note down points like 'occupies space' and 'has weight'. Under "Uses," connect to 'breathing', 'burning', and 'windmills'. This visual summary helps in quick recall of key terms and concepts.

8. The notes mention oxygen and carbon dioxide, but why is summarising the role of nitrogen important for a complete revision?

While oxygen is vital for breathing, revising the role of nitrogen is crucial because it is the most abundant gas (78%). Its primary role mentioned in the notes is to dilute oxygen. Pure oxygen is highly reactive, and nitrogen's presence slows down the process of burning, making it controllable. A full chapter summary must include the importance of this major component.