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Fundamentals of Physical Geography: Water in the Atmosphere Video Lecture | NCERT Video Summary: Class 6 to Class 12 (English) - UPSC

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FAQs on Fundamentals of Physical Geography: Water in the Atmosphere Video Lecture - NCERT Video Summary: Class 6 to Class 12 (English) - UPSC

1. What is the importance of water in the atmosphere?
Ans. Water in the atmosphere plays a crucial role in various processes such as precipitation, condensation, and cloud formation. It helps in regulating the Earth's temperature by absorbing and releasing heat energy. Additionally, water in the atmosphere is essential for the water cycle, which is responsible for distributing water across the planet.
2. How does water vapor enter the atmosphere?
Ans. Water vapor enters the atmosphere through processes such as evaporation and transpiration. Evaporation occurs when water changes from a liquid state to a gaseous state due to heat energy. Transpiration, on the other hand, is the process by which plants release water vapor through their leaves.
3. What is the relationship between humidity and water vapor in the atmosphere?
Ans. Humidity is the measure of the amount of water vapor present in the atmosphere. As the amount of water vapor increases, the humidity also increases. Conversely, when the amount of water vapor decreases, the humidity decreases. Humidity plays a significant role in determining the comfort level and affects weather patterns.
4. How does water in the atmosphere contribute to weather patterns?
Ans. Water in the atmosphere influences weather patterns through various processes. When warm, moist air rises, it cools and condenses, forming clouds and potentially leading to precipitation. The release of latent heat during condensation also affects atmospheric stability and can contribute to the formation of severe weather phenomena such as thunderstorms and hurricanes.
5. What is the role of water in the atmosphere in climate regulation?
Ans. Water in the atmosphere helps regulate the Earth's climate by acting as a greenhouse gas. It absorbs and re-emits heat energy, contributing to the greenhouse effect. The greenhouse effect keeps the Earth's surface warm enough to sustain life. The amount of water vapor in the atmosphere affects the intensity and duration of climate events such as droughts, floods, and heatwaves.
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