CBSE Science Class 6
Air Around Us
Air Around Us - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Points To Remember:
- Air is needed by all living things, we cannot see air but we can feel it.
- Air in motion is called wind.
- Air occupies space, air has weight and it is present in water and soil.
- Air is the mixture of gases like oxygen, nitrogen, carbon dioxide, water vapours and other gases.
- The presence of water vapour in air is important for the water cycle in nature.
- Our earth is surrounded by a thin layer of air, this layer extends upto many kilometers above the surface of earth and is called atmosphere.
- Oxygen supports burning and is an important gas that is necessary for living organisms.
- Major part of air is nitrogen
- The burning of fuel produces smoke, smoke contains few gases and fine dust particles that is often harmful.
- Aquatic animals use dissolved air in water for respiration.
- Plants and animals depends on each other for exchange of oxygen and carbon dioxide from air.
