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Earth's Atmosphere Video Lecture | Geography Class 11 - Humanities/Arts
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FAQs on Earth's Atmosphere Video Lecture - Geography Class 11 - Humanities/Arts
| 1. How does the Earth's atmosphere protect us from harmful radiation? |  |
Ans. The Earth's atmosphere protects us from harmful radiation by absorbing and scattering a significant portion of the Sun's ultraviolet (UV) radiation. The ozone layer in the atmosphere specifically plays a crucial role in filtering out harmful UV radiation, preventing it from reaching the Earth's surface and potentially causing harm to living organisms.
| 2. What are the major components of the Earth's atmosphere? | |
Ans. The major components of the Earth's atmosphere are nitrogen (78%), oxygen (21%), and trace amounts of other gases such as argon, carbon dioxide, neon, helium, and methane. These gases, along with water vapor, make up the composition of the Earth's atmosphere, creating a protective layer around the planet.
| 3. How does the Earth's atmosphere regulate the planet's temperature? | |
Ans. The Earth's atmosphere regulates the planet's temperature through a process known as the greenhouse effect. Certain gases in the atmosphere, such as carbon dioxide and water vapor, trap heat from the Sun and prevent it from escaping back into space. This natural greenhouse effect helps to maintain a relatively stable temperature on Earth, making it suitable for sustaining life.
| 4. What are the different layers of the Earth's atmosphere? | |
Ans. The Earth's atmosphere is divided into five main layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The troposphere is the lowest layer, where weather occurs and most of the Earth's air mass is concentrated. The stratosphere contains the ozone layer, which absorbs UV radiation. The mesosphere is above the stratosphere and is characterized by decreasing temperatures with altitude. The thermosphere is the thickest layer and experiences a significant increase in temperature due to the absorption of solar radiation. Finally, the exosphere is the outermost layer, gradually merging with the vacuum of space.
| 5. How does air pollution affect the Earth's atmosphere? | |
Ans. Air pollution can have detrimental effects on the Earth's atmosphere. The release of pollutants, such as carbon dioxide, nitrogen oxides, and particulate matter, contributes to the depletion of the ozone layer and the formation of smog. These pollutants can also lead to global warming and climate change by trapping excess heat in the atmosphere. Additionally, air pollution can have adverse effects on human health, ecosystems, and the overall quality of the air we breathe.
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Nov 17, 2024 Last updated |
Video Description: Earth's Atmosphere for Humanities/Arts 2024 is part of Geography Class 11 preparation.
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