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Geography

The heat budget of the earth

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.

Medium · Level 10 · 9 questions

TOPIC PRACTICE

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  1. It absorbs and scatters some radiation, transfers heat, and emits longwave radiation
  2. It is completely separate from energy processes
  3. It creates the Sun's energy
  4. It prevents all radiation from reaching or leaving the surface
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  1. The heat-storage capacity of the oceans
  2. The complete absence of the atmosphere
  3. Moonlight
  4. Seismic waves
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  1. When the oceans store some of the added energy for a time
  2. When Earth never receives energy
  3. When the Sun suddenly disappears
  4. When albedo does not exist
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  1. Because the surface also receives downward longwave radiation from the atmosphere and exchanges energy through latent and sensible heat fluxes
  2. Because the surface never emits longwave radiation
  3. Because shortwave and longwave radiation are identical
  4. Because the atmosphere has no role in energy exchange
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  1. The Earth system is receiving more energy than it is sending back to space
  2. Earth is receiving no energy
  3. All incoming energy is reflected
  4. The Sun has stopped supplying energy
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  1. Because energy flows vary with clouds, weather, surface conditions, and season
  2. Because the numbers have no connection to energy
  3. Because energy conditions do not vary anywhere on Earth
  4. Because the Sun always shines at the same angle everywhere
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  1. It accounts for incoming solar shortwave radiation, reflected shortwave and outgoing longwave radiation, as well as energy exchanges and transport within the Earth system
  2. It is only the amount of sunlight reaching Earth
  3. It is only the temperature of Earth's surface
  4. It is only the reflection of sunlight by clouds
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  1. The surface absorbs it and re-emits longwave heat
  2. The Sun immediately cools down
  3. Radiation directly turns into water
  4. Air turns it into rock
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  1. Incoming energy absorbed by Earth and energy leaving for space are unequal
  2. Incoming solar energy and reflected solar energy are equal
  3. Heat being transferred in the atmosphere only by convection
  4. All parts of Earth being at the same temperature

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