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SubjectsGeography
पृथ्वी का ऊष्मा बजट
Class 11 Geography explores the heat budget of the Earth as the balance between incoming solar radiation and outgoing terrestrial radiation. Students learn how the atmosphere, land, oceans, clouds, and ice reflect, absorb, store, and redistribute heat, and why the Earth’s average temperature remains broadly stable. The topic connects this balance with the greenhouse effect, latitudinal differences in heating, and the movement of heat through the atmosphere and oceans.
Correct answer: A. Because reflected energy does not remain as heat in the Earth system
Explanation: Reflection sends energy back to space so it does not take part in heating. Exam tip: keep reflection and absorption separate.
Correct answer: A. It is the balance of energy receipt reflection absorption transfer and emission in the Earth atmosphere system
Explanation: The heat budget explains Earth's thermal balance by combining many processes. Exam tip: treat it as an integrated energy balance.
Correct answer: A. The energy absorbed by Earth and the energy emitted to space are not equal
Explanation: Earth’s energy budget compares incoming absorbed solar radiation with outgoing longwave radiation emitted to space. An imbalance occurs when these fluxes are unequal. If absorption exceeds emission, energy accumulates and the climate system warms; if emission exceeds absorption, the system loses energy and cools. Thus, imbalance does not mean that one type of radiation has disappeared.
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