Question 1

Why may daytime temperature decrease when less energy reaches Earth's surface?

Accepted Answer

Surface absorption decreases With less insolation the surface heats less. Exam tip: connect surface temperature with received insolation.

Question 2

Why is it wrong to call the greenhouse effect completely harmful in the heat budget?

Accepted Answer

The natural greenhouse effect keeps Earth warm enough for life At a natural level it helps maintain balanced temperature. Exam tip: distinguish natural and enhanced greenhouse effect.

Question 3

What may happen to solar radiation when atmospheric particles increase?

Accepted Answer

Scattering and reflection may increase Particles can change the direction and amount of incoming radiation. Exam tip: connect aerosols with radiation modification.

Question 4

Which idea is most useful for understanding the link between heat budget and climate change?

Accepted Answer

Energy imbalance can cause temperature change When the difference between incoming and outgoing energy changes temperature is affected. Exam tip: connect climate change with energy imbalance.

Question 5

How is energy absorption by ozone in the stratosphere linked with the heat budget?

Accepted Answer

It retains part of incoming solar radiation within the atmosphere Ozone absorbs ultraviolet radiation and affects atmospheric energy balance. Exam tip: connect ozone with incoming radiation absorption.

Question 6

Which option shows the correct direction in the heat budget?

Accepted Answer

Shortwave from Sun to Earth and longwave from Earth to space Incoming radiation is solar shortwave and outgoing radiation is terrestrial longwave. Exam tip: remember direction and wavelength together.

Question 7

Why is surface moisture important in the heat budget?

Accepted Answer

Energy is stored as latent heat during evaporation Part of energy over a wet surface is used in evaporation. Exam tip: connect moisture with latent heat process.

Question 8

What is produced in the atmosphere due to unequal heat distribution in the heat budget?

Accepted Answer

Pressure differences and winds Unequal heating creates pressure differences and winds. Exam tip: connect unequal heating with wind formation.

Question 9

If there were no atmosphere what could happen to Earth's daily temperature range?

Accepted Answer

Temperature range could become very large The atmosphere regulates heat and reduces extreme heating and cooling. Exam tip: understand atmosphere as a thermal blanket.

Question 10

On what does Earth's long-term thermal balance in the heat budget depend?

Accepted Answer

On energy input and output remaining nearly equal Thermal balance exists when Earth emits nearly as much energy as it receives. Exam tip: connect long-term balance with input-output equality.

Question 11

Which example shows low albedo and high absorption?

Accepted Answer

Black asphalt road Black asphalt absorbs more solar energy and reflects less. Exam tip: also connect asphalt with urban heat.

Question 12

Why is horizontal transfer of energy needed in the heat budget?

Accepted Answer

Because some regions have heat surplus and others have heat deficit Atmosphere and oceans carry heat from surplus areas to deficit areas. Exam tip: connect horizontal transfer with global circulation.

Question 13

Why can sandy deserts have a large day and night temperature range?

Accepted Answer

Low moisture and clear sky allow heat to gain and escape quickly In dry and clear conditions heating by day and cooling by night are rapid. Exam tip: connect desert range with low humidity.

Question 14

Why is studying the heat budget useful for both weather and climate?

Accepted Answer

Because energy balance affects temperature pressure and winds Distribution of energy forms the basis of atmospheric conditions. Exam tip: treat heat budget as a foundation of weather and climate.

Question 15

In the hundred unit heat budget about how much energy is considered reflected by clouds?

Accepted Answer

Twenty seven units Clouds send the largest reflected share of incoming solar energy back to space. In exams remember cloud reflection as about twenty seven units.

Question 16

In the hundred unit model about how much energy is reflected from Earths surface?

Accepted Answer

Two units The part directly reflected by the surface is small in total reflection. In exams remember surface reflection as about two units.

Question 17

About how many units of energy return due to atmospheric scattering?

Accepted Answer

Six units Particles in the atmosphere scatter some solar energy back toward space. In exams remember scattering share as about six units.

Question 18

If clouds return twenty seven units and atmosphere returns six units how much surface reflection completes total reflection of thirty five units?

Accepted Answer

Two units Total reflection is thirty five units so after twenty seven and six the surface part is two units. In exams solve it by subtraction.

Question 19

What is the main importance of fifty one units absorbed by Earths surface in the heat budget?

Accepted Answer

It heats the surface and becomes the basis of terrestrial radiation Surface absorption later becomes the basis for emission of longwave energy. In exams link fifty one units with surface heating.

Question 20

What does absorption of fourteen units of solar energy in the atmosphere show?

Accepted Answer

The atmosphere also directly takes some incoming solar energy A small but important part of solar energy is absorbed in the atmosphere itself. In exams take atmospheric absorption as fourteen units.

Question 21

The seventeen units of energy going directly from Earths surface to space are in which form?

Accepted Answer

Longwave terrestrial radiation The surface emits absorbed energy as longwave terrestrial radiation. In exams link direct outgoing energy with longwave radiation.

Question 22

The thirty four units absorbed by the atmosphere from the surface are linked with which process?

Accepted Answer

Absorption of terrestrial longwave radiation The atmosphere absorbs a large part of longwave energy emitted by the surface. In exams link thirty four units with atmospheric greenhouse absorption.

Question 23

How are forty eight units of energy going from atmosphere to space formed?

Accepted Answer

From fourteen units solar absorption and thirty four units terrestrial absorption The atmosphere re radiates the energy it receives toward space. In exams add fourteen and thirty four to remember forty eight.

Question 24

How does total outgoing energy become hundred units in the heat budget?

Accepted Answer

By thirty five reflected seventeen direct and forty eight atmospheric energy All returning energy parts together make hundred units. In exams remember total outgoing as thirty five plus seventeen plus forty eight.

Question 25

What relation is shown by sixty five absorbed units and sixty five outgoing longwave units in the heat budget?

Accepted Answer

Radiative balance Absorbed energy is ultimately balanced by longwave energy output. In exams remember sixty five absorption and sixty five heat output together.

The heat budget of the earth

Practice questions

01 Why may daytime temperature decrease when less energy reaches Earth's surface?

02 Why is it wrong to call the greenhouse effect completely harmful in the heat budget?

03 What may happen to solar radiation when atmospheric particles increase?

04 Which idea is most useful for understanding the link between heat budget and climate change?

05 How is energy absorption by ozone in the stratosphere linked with the heat budget?

06 Which option shows the correct direction in the heat budget?

07 Why is surface moisture important in the heat budget?

08 What is produced in the atmosphere due to unequal heat distribution in the heat budget?

09 If there were no atmosphere what could happen to Earth's daily temperature range?

10 On what does Earth's long-term thermal balance in the heat budget depend?

11 Which example shows low albedo and high absorption?

12 Why is horizontal transfer of energy needed in the heat budget?

13 Why can sandy deserts have a large day and night temperature range?

14 Why is studying the heat budget useful for both weather and climate?

15 In the hundred unit heat budget about how much energy is considered reflected by clouds?

16 In the hundred unit model about how much energy is reflected from Earths surface?

17 About how many units of energy return due to atmospheric scattering?

18 If clouds return twenty seven units and atmosphere returns six units how much surface reflection completes total reflection of thirty five units?

19 What is the main importance of fifty one units absorbed by Earths surface in the heat budget?

20 What does absorption of fourteen units of solar energy in the atmosphere show?

21 The seventeen units of energy going directly from Earths surface to space are in which form?

22 The thirty four units absorbed by the atmosphere from the surface are linked with which process?

23 How are forty eight units of energy going from atmosphere to space formed?

24 How does total outgoing energy become hundred units in the heat budget?

25 What relation is shown by sixty five absorbed units and sixty five outgoing longwave units in the heat budget?

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