UPSC Exam > UPSC Videos > NCERT Video Summary: Class 6 to Class 12 (English) > Fundamentals of Physical Geography: Atmospheric Circulation & Weather Systems
Fundamentals of Physical Geography: Atmospheric Circulation & Weather Systems Video Lecture | NCERT Video Summary: Class 6 to Class 12 (English) - UPSC
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FAQs on Fundamentals of Physical Geography: Atmospheric Circulation & Weather Systems Video Lecture - NCERT Video Summary: Class 6 to Class 12 (English) - UPSC
| 1. What is atmospheric circulation and how does it influence weather systems? |  |
Ans. Atmospheric circulation refers to the large-scale movement of air in the Earth's atmosphere. It is driven by the uneven heating of the Earth's surface by the Sun and the Earth's rotation. The movement of air creates different pressure systems, such as high and low-pressure areas, which in turn influence the formation and movement of weather systems. This includes the development of winds, cyclones, anticyclones, and the distribution of precipitation.
| 2. What are the main factors that drive atmospheric circulation? | |
Ans. The main factors that drive atmospheric circulation are the uneven heating of the Earth's surface by the Sun, the Earth's rotation, and the distribution of land and water. The Sun's energy is absorbed differently by different surfaces, creating temperature differences and resulting in the formation of pressure systems. The rotation of the Earth deflects the movement of air, creating global wind patterns. The presence of land and water also influences atmospheric circulation, as land heats up and cools down more quickly than water, leading to the formation of different pressure systems.
| 3. How are weather systems formed within the atmospheric circulation? | |
Ans. Weather systems are formed within the atmospheric circulation through the interaction of air masses with different properties, such as temperature and moisture. When warm and cold air masses meet, they create fronts, which are boundaries between the air masses. These fronts can lead to the formation of various weather systems, such as cyclones and anticyclones. Cyclones are associated with low-pressure areas and result in stormy weather, while anticyclones are associated with high-pressure areas and result in calm and clear weather.
| 4. What are the different types of atmospheric circulation patterns? | |
Ans. There are three main types of atmospheric circulation patterns: global circulation, regional circulation, and local circulation. Global circulation refers to the large-scale movement of air around the Earth, driven by the uneven heating of the Earth's surface. This includes the formation of the Hadley, Ferrel, and Polar cells. Regional circulation refers to the movement of air within specific regions, influenced by topography and proximity to large bodies of water. Local circulation refers to the small-scale movement of air within local areas, influenced by factors such as temperature differences and local topography.
| 5. How does atmospheric circulation impact climate patterns? | |
Ans. Atmospheric circulation plays a crucial role in shaping climate patterns. The global circulation patterns, such as the Hadley, Ferrel, and Polar cells, determine the distribution of heat and moisture across the Earth. This leads to the formation of different climate zones, such as tropical, temperate, and polar climates. Additionally, regional and local circulation patterns can further influence climate within specific regions, such as the monsoon circulation in South Asia. Changes in atmospheric circulation patterns can result in shifts in climate patterns, such as the El Niño-Southern Oscillation (ENSO) phenomenon.
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Oct 31, 2024 Last updated |
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