Why is reflected energy not counted as absorbed energy in heat budget calculation?
Correct answer: A
Reflection sends energy back to space so it does not take part in heating. Exam tip: keep reflection and absorption separate.
Geography
The heat budget of the earth
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.
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Hard · Level 7
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- Because reflected energy does not remain as heat in the Earth system
- Because reflected energy always enters the ground
- Because reflected energy is always longwave
- Because reflection has no relation with energy
Hard · Level 7
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- It is the balance of energy receipt reflection absorption transfer and emission in the Earth atmosphere system
- It is only the study of Sun's distance
- It is only an account of rainfall amount
- It is only calculation of ocean depth
Hard · Level 7
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- The energy absorbed by Earth and the energy emitted to space are not equal
- Only solar energy is entering Earth's atmosphere
- No heat is being radiated from Earth's surface
- The temperature of all parts of Earth has become the same
Which statement is most suitable for an integrated understanding of the heat budget?
Correct answer: A
The heat budget explains Earth's thermal balance by combining many processes. Exam tip: treat it as an integrated energy balance.
What does imbalance in the energy budget mean?
Correct answer: A
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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