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Amosphere and layers of Atmosphere Video Lecture | Zoology Optional Notes for UPSC
FAQs on Amosphere and layers of Atmosphere Video Lecture - Zoology Optional Notes for UPSC
| 1. What is the composition of the Earth's atmosphere? |  |
Ans. The Earth's atmosphere is primarily composed of nitrogen (about 78%) and oxygen (about 21%), with trace amounts of other gases such as argon, carbon dioxide, and water vapor.
| 2. What are the layers of the Earth's atmosphere? | |
Ans. The Earth's atmosphere is divided into five layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has its own unique characteristics and plays a different role in the Earth's climate system.
| 3. How does the atmosphere protect Earth from harmful radiation? | |
Ans. The Earth's atmosphere acts as a shield, absorbing and scattering harmful ultraviolet (UV) radiation from the sun. The ozone layer in the stratosphere, in particular, plays a crucial role in protecting life on Earth from the harmful effects of UV radiation.
| 4. What is the significance of the greenhouse effect in the Earth's atmosphere? | |
Ans. The greenhouse effect is a natural process where certain gases in the atmosphere trap heat from the sun, helping to maintain Earth's temperature within a habitable range. However, human activities have intensified the greenhouse effect, leading to global climate change.
| 5. How does air pressure change with altitude in the Earth's atmosphere? | |
Ans. Air pressure decreases with increasing altitude in the Earth's atmosphere. This is because the weight of the air above a certain point decreases as you move higher up in the atmosphere, leading to lower air pressure at higher altitudes.
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