Humanities/Arts Exam > Humanities/Arts Videos > Geography Class 11 > Introduction: Solar Radiation, Heat Balance and Temperature (Part - 1)
Introduction: Solar Radiation, Heat Balance and Temperature (Part - 1) Video Lecture | Geography Class 11 - Humanities/Arts
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FAQs on Introduction: Solar Radiation, Heat Balance and Temperature (Part - 1) Video Lecture - Geography Class 11 - Humanities/Arts
| 1. What is solar radiation and how does it affect heat balance and temperature? |  |
Ans. Solar radiation refers to the energy emitted by the sun in the form of electromagnetic waves. When this radiation reaches the Earth's surface, it interacts with various components of the atmosphere, land, and oceans, leading to changes in heat balance. Solar radiation plays a crucial role in determining the temperature of the Earth's surface and its atmosphere.
| 2. How does solar radiation contribute to the greenhouse effect? | |
Ans. Solar radiation is partially absorbed by the Earth's surface, which then emits longwave radiation. Some of this longwave radiation is trapped by greenhouse gases in the atmosphere, such as carbon dioxide and water vapor, creating the greenhouse effect. This phenomenon helps to maintain Earth's temperature suitable for life by preventing excessive heat loss to space.
| 3. What factors influence the amount of solar radiation reaching the Earth's surface? | |
Ans. Several factors determine the amount of solar radiation reaching the Earth's surface. These include the angle of incidence of the sun's rays, the duration of sunlight, the presence of clouds or atmospheric particles that can scatter or absorb solar radiation, and the Earth's distance from the sun. Additionally, the inclination of the Earth's axis and variations in solar activity also affect the amount of solar radiation received.
| 4. How does heat balance occur on Earth? | |
Ans. Heat balance on Earth occurs through a combination of various processes. Solar radiation heats the Earth's surface, which then emits longwave radiation. This longwave radiation is absorbed by greenhouse gases in the atmosphere, causing warming. At the same time, the Earth's surface also loses heat through conduction, convection, and evaporation. The balance between incoming and outgoing radiation determines the overall temperature of the Earth.
| 5. How does solar radiation affect the Earth's climate? | |
Ans. Solar radiation plays a crucial role in shaping the Earth's climate. Variations in solar radiation, such as changes in the sun's activity or the Earth's orbit, can lead to long-term climate changes. Additionally, solar radiation influences atmospheric circulation patterns, ocean currents, and the distribution of heat across the globe. Understanding the impact of solar radiation on climate is essential for studying and predicting climate change.
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Nov 17, 2024 Last updated |
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