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Mind Map: Solar Radiation, Heat Balance and Temperature | Geography Class 11 - Humanities/Arts PDF Download

Mind Map: Solar Radiation, Heat Balance and Temperature | Geography Class 11 - Humanities/Arts

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FAQs on Mind Map: Solar Radiation, Heat Balance and Temperature - Geography Class 11 - Humanities/Arts

1. What is solar radiation and how does it affect Earth's temperature?
Ans. Solar radiation is the energy emitted by the sun in the form of electromagnetic waves. This energy reaches Earth and is absorbed by land, water, and the atmosphere, contributing to the planet's overall temperature. The amount of solar radiation received at a given location affects local climates and weather patterns.
2. How is heat balance maintained on Earth?
Ans. Heat balance on Earth is maintained through the equilibrium between incoming solar radiation and outgoing infrared radiation. The Earth absorbs sunlight, which warms the surface, and then radiates some of that energy back into space. This balance is crucial for maintaining a stable climate and temperature.
3. What factors influence the Earth's temperature besides solar radiation?
Ans. In addition to solar radiation, factors such as greenhouse gases, albedo (reflectivity of surfaces), ocean currents, and land use changes influence the Earth's temperature. Greenhouse gases trap heat in the atmosphere, while albedo affects how much solar energy is reflected back into space.
4. How does the angle of solar radiation impact temperature variations?
Ans. The angle at which solar radiation strikes the Earth affects the intensity and distribution of heat. Areas near the equator receive sunlight directly, resulting in higher temperatures, while regions near the poles receive sunlight at a lower angle, leading to cooler temperatures. This difference creates climate zones across the globe.
5. What role does the greenhouse effect play in solar radiation and Earth's heat balance?
Ans. The greenhouse effect is the process by which certain gases in the atmosphere trap heat radiated from the Earth's surface. This effect enhances the heat balance by keeping the planet warm enough to support life. However, increased greenhouse gas concentrations due to human activities can lead to global warming and climate change.
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