Download the latest CBSE Class 6 Science Air Around Us in PDF format. These Class 6 Science revision notes are carefully designed by expert teachers to align with the 2025-26 syllabus. These notes are great daily learning and last minute exam preparation and they simplify complex topics and highlight important definitions for Class 6 students.
Chapter-wise Revision Notes for Class 6 Science Chapter 15 Air Around Us
To secure a higher rank, students should use these Class 6 Science Chapter 15 Air Around Us notes for quick learning of important concepts. These exam-oriented summaries focus on difficult topics and high-weightage sections helpful in school tests and final examinations.
Chapter 15 Air Around Us Revision Notes for Class 6 Science
Topics in the chapter
- What is air?
- Composition of Air
- How does oxygen become available for all living beings?
- Properties of air
What is air?
- Air is a mixture of gases and dust particles. It is a clear gas in which living things breathe and live.
- Air is a matter it has volume and mass. It creates atmospheric pressure.
- In vacuum there in no air present over there.
Atmosphere: It is a thick layer of air surrounding the earth’s surface is known as atmosphere.
Wind: The moving air is known as wind.
Air composition
- Air contains mainly oxygen, nitrogen and remaining includes noble gases, carbon dioxide, water vapour, traces of other gases and dust particles.
- Oxygen and nitrogen: air contains 28% oxygen and 78% nitrogen.
- Oxygen helps in burning. It is used by living things to respire,
- Nitrogen helps in growth of plant.
Carbon dioxide
- Air contains 0.003% of carbon dioxide.
- Carbon dioxide is also produced during burning.
- Plants and animals produce carbon dioxide during respiration.
Water vapour
- Air contains some amounts of water vapour depends upon the weather of a place.
- Water vapour presence is very important for water cycle in nature.
Dust and Smoke
- Smoke contains few gases with fine dust particles and is often harmful.
How does oxygen become available for all living beings?
Plants
- They use carbon dioxide of the air to make their own food by a process called photosynthesis.
Aquatic animals
- Most aquatic animals have special organs for respiration called gills. They use oxygen from air dissolved in water.
Amphibians
- Some amphibians like frogs, salamanders need breathing systems for both water and air.
- Frogs have lungs to breathe air when on land. In water, frogs breathe with their moist skin.
Birds
- They have pair of lungs with air sacs which is open all the time, because birds need high level of oxygen during flight.
Mammals
- They breathe with the help of lungs. They take oxygen and give out carbon dioxide.
Properties of oxygen
- Air is colourless
- Air is transparent
- It is essential for life
- It occupies space
- It present everywhere including water and soil
- It exerts pressure
We may conclude, then, that air contains some gases, water vapor and dust particles. The gases in air are mainly nitrogen, oxygen small amount of carbon dioxide, and many other gases. However, there may be some variations in the composition of air from place to place. We see that air contains mostly nitrogen and oxygen. In fact, these two gases together make up 99% of the air. The remaining 1% is constituted by carbon dioxide and a gew other gases, water vapour and dust partiicles.
HOW ODES OXYGEN BECOME AVAILABLE TO ANIMALS AND PLANTS LIVING IN WATER AND SOIL
The animals and plants living in water take in the oxygen dissolved In water.
The presence of dissolved oxygen in water can be felt by a simple experiment.
Activity: Take some water in a beaker and heat it slowly on a tripod stand . Heat it before it begins to boil. Now carefully look at the inner surface of the beaker. We see tiny bubbles on the inside. These bubbles come from air dissolved in water when we heat it, the air dissolved in it begins to escape and we see bubbles in water. The organisms that live in soil also need oxygen to respire. If we take a lump of dry soil In a beaker and add water in it, we can observe bubbles coming out of soil. This shows the presence of air in soil.
The plants and animals that live inside the soli respire in this air. A lot of burrows and holes are formed in deep soil by the animals living in the soil. These burrows also make spaces available for air to move in and out of soil. However, when it rains heavily water fills up all the spaces occupied by the air in soil. In this situation animals living in the soil have to come out for respiration .
This is why earthworms come out of soil during rainy season .
OTHER IMPORTANT USES OF AIR
1. Wind mill : Moving air is called wind. Wind makes the windmill rotate. The wind mill is used to draw water from tubewells and to run flour mills. They are also used to generate electricity.
2. Air helps in sailing yachts, gliders, parachutes and aeroplanes.
3. Birds, bats and insects can fly due to the presence of air.
4. Air also helps in dispersal of seeds and pollens of flowers and several plants.
5. Air plays an important role in water cycle.
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CBSE Class 6 Science Chapter 15 Air Around Us Notes
Students can use these Revision Notes for Chapter 15 Air Around Us to quickly understand all the main concepts. This study material has been prepared as per the latest CBSE syllabus for Class 6. Our teachers always suggest that Class 6 students read these notes regularly as they are focused on the most important topics that usually appear in school tests and final exams.
NCERT Based Chapter 15 Air Around Us Summary
Our expert team has used the official NCERT book for Class 6 Science to design these notes. These are the notes that definitely you for your current academic year. After reading the chapter summary, you should also refer to our NCERT solutions for Class 6. Always compare your understanding with our teacher prepared answers as they will help you build a very strong base in Science.
Chapter 15 Air Around Us Complete Revision and Practice
To prepare very well for y our exams, students should also solve the MCQ questions and practice worksheets provided on this page. These extra solved questions will help you to check if you have understood all the concepts of Chapter 15 Air Around Us. All study material on studiestoday.com is free and updated according to the latest Science exam patterns. Using these revision notes daily will help you feel more confident and get better marks in your exams.
You can download the teacher prepared revision notes for CBSE Class 6 Science Air Around Us from StudiesToday.com. These notes are designed as per 2025-26 academic session to help Class 6 students get the best study material for Science.
Yes, our CBSE Class 6 Science Air Around Us include 50% competency-based questions with focus on core logic, keyword definitions, and the practical application of Science principles which is important for getting more marks in 2026 CBSE exams.
Yes, our CBSE Class 6 Science Air Around Us provide a detailed, topic wise breakdown of the chapter. Fundamental definitions, complex numerical formulas and all topics of CBSE syllabus in Class 6 is covered.
These notes for Science are organized into bullet points and easy-to-read charts. By using CBSE Class 6 Science Air Around Us, Class 6 students fast revise formulas, key definitions before the exams.
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