Class 2 Exam > Class 2 Videos > Science for Class 2 > Air Around Us
Air Around Us Video Lecture | Science for Class 2
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13 videos|80 docs|24 tests
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FAQs on Air Around Us Video Lecture - Science for Class 2
| 1. What is air and why is it important? |  |
Ans. Air is a mixture of gases that surround the Earth. It is important because it is essential for the survival of all living organisms. It provides us with oxygen to breathe, helps regulate the Earth's temperature, and plays a crucial role in the water cycle.
| 2. How is air polluted and what are the sources of air pollution? | |
Ans. Air can be polluted by various sources, including both natural and human activities. Natural sources of air pollution include volcanic eruptions and dust storms. Human activities such as industrial emissions, vehicle exhaust, burning of fossil fuels, and deforestation are major contributors to air pollution.
| 3. What are the effects of air pollution on human health? | |
Ans. Air pollution can have severe effects on human health. Breathing in polluted air can lead to respiratory problems such as asthma, bronchitis, and lung cancer. It can also cause cardiovascular diseases, allergies, and weaken the immune system. Long-term exposure to air pollution can result in chronic health issues.
| 4. How does air pollution affect the environment? | |
Ans. Air pollution has detrimental effects on the environment. It contributes to global warming and climate change by trapping heat in the Earth's atmosphere. It also damages ecosystems, disrupts the natural balance of ecosystems, and harms wildlife. Acid rain, smog, and depletion of the ozone layer are some of the environmental consequences of air pollution.
| 5. What are some measures to reduce air pollution? | |
Ans. There are several measures that can be taken to reduce air pollution. These include promoting the use of clean and renewable energy sources, improving fuel efficiency in vehicles, implementing stricter emission standards for industries, encouraging public transportation, and promoting afforestation. Additionally, raising awareness about the harmful effects of air pollution and advocating for sustainable practices can also contribute to reducing air pollution levels.
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Nov 22, 2024 Last updated |
Video Description: Air Around Us for Class 2 2024 is part of Science for Class 2 preparation.
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