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Atmosphere: World Geography Video Lecture | IBPS PO Prelims & Mains Preparation - Bank Exams
FAQs on Atmosphere: World Geography Video Lecture - IBPS PO Prelims & Mains Preparation - Bank Exams
| 1. What are the main components of the Earth's atmosphere? |  |
Ans. The Earth's atmosphere is composed of several layers, primarily including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has distinct characteristics and plays a crucial role in weather, climate, and the protection of life on Earth. The atmosphere is also made up of gases, including nitrogen (about 78%), oxygen (about 21%), and trace amounts of other gases such as carbon dioxide, argon, and water vapor.
| 2. How does human activity impact the atmosphere? | |
Ans. Human activities such as burning fossil fuels, deforestation, and industrial processes contribute to the release of greenhouse gases, aerosols, and pollutants into the atmosphere. This can lead to global warming, climate change, and air quality issues, which can adversely affect health, ecosystems, and weather patterns.
| 3. Why is the ozone layer important for life on Earth? | |
Ans. The ozone layer, located within the stratosphere, plays a vital role in protecting life on Earth by absorbing the majority of the sun's harmful ultraviolet (UV) radiation. Without the ozone layer, increased UV exposure would lead to higher rates of skin cancer, cataracts, and other health issues, as well as detrimental effects on ecosystems and wildlife.
| 4. What are the effects of atmospheric pressure changes? | |
Ans. Changes in atmospheric pressure can significantly affect weather patterns and are often associated with various phenomena. For example, low atmospheric pressure is typically linked to stormy and rainy weather, while high pressure is associated with clear skies and fair weather. Additionally, atmospheric pressure changes can impact human health, altitude sickness, and the behavior of liquids and gases.
| 5. How does the atmosphere regulate temperature on Earth? | |
Ans. The atmosphere regulates temperature through the greenhouse effect, where certain gases trap heat from the sun, keeping the Earth's surface warm enough to support life. This process balances incoming solar radiation and outgoing infrared radiation, maintaining a relatively stable climate. Factors such as cloud cover, humidity, and atmospheric circulation also play roles in temperature regulation.
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