Class 6 Exam > Class 6 Videos > Air around us - Class 6
Air around us - Class 6 Video Lecture
FAQs on Air around us - Class 6 Video Lecture
| 1. What is the composition of air? |  |
Ans. Air is mainly composed of nitrogen (about 78%), oxygen (about 21%), and traces of other gases such as carbon dioxide, argon, and water vapor.
| 2. How does air help in the process of respiration? | |
Ans. When we breathe, we inhale air containing oxygen. This oxygen is essential for our body's cells to perform respiration, which produces energy for various bodily functions. After respiration, we exhale air rich in carbon dioxide, which is a waste product.
| 3. What are the different layers of the atmosphere? | |
Ans. The atmosphere is divided into five main layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has distinct characteristics and plays a vital role in Earth's climate and weather patterns.
| 4. How does air pollution affect our health? | |
Ans. Air pollution, caused by harmful substances released into the air, can have severe health effects. Breathing in polluted air can lead to respiratory problems, allergies, asthma, and even long-term lung damage. It can also increase the risk of heart disease and other health issues.
| 5. How does air pressure change with altitude? | |
Ans. Air pressure decreases as altitude increases. This is because the weight of the air above decreases as we move higher in the atmosphere. At sea level, the air pressure is higher compared to higher altitudes where the air pressure is lower.
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Nov 23, 2024 Last updated |
Air around us - Class 6 for Class 62024 is part of Class 6 preparation. The notes and questions for Air around us - Class 6
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