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.

Practice questions

01 Why does a region with energy deficit tend to cool?

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Answer and explanation

The heat budget of the earth

Practice questions

01 Why does a region with energy deficit tend to cool?

02 What is the main reason for energy surplus in low latitudes?

03 What is one main reason for energy deficit in high latitudes?

04 How do the atmosphere and oceans help reduce energy surplus and deficit?

05 Why do local temperatures differ even though the global heat budget is balanced?

06 If surface albedo increases what change is possible in the local heat budget?

07 Why do snow covered areas behave differently from forests in the heat budget?

08 Which will absorb more solar energy dark soil or white snow and why?

09 If cloud cover is high during the day which component of the heat budget may increase?

10 What is the general effect on surface energy loss when clouds increase at night?

11 Why does the atmosphere absorb a large part of longwave energy emitted by Earths surface?

12 Why is terrestrial radiation called longwave in heat budget?

13 What is the main reason solar radiation is called shortwave?

14 What is the basic difference between absorption and reflection in heat budget?

15 If the reflectivity of a surface decreases what effect on its local temperature is possible?

16 If greenhouse gases are very low what is more likely to happen to longwave terrestrial energy?

17 Which sources are included in the forty eight units of energy going from atmosphere back to space?

18 What does the seventeen units of energy going directly from surface to space show in the heat budget?

19 Why do clouds affect the heat budget differently during day and night?

20 How can scattering of solar energy change the energy received at the surface?

21 If dust and aerosols increase in an area which part of the heat budget will be affected?

22 How does energy absorbed by the surface indirectly warm the atmosphere in the heat budget?

23 Which statement best explains heat budget on the basis of energy conservation?

24 If incoming solar energy remains constant but reflection decreases what happens to absorbed energy?

25 If incoming solar energy is same but surface becomes darker how will local heat budget change?

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