Class 11 Geography Chapter 12 World Climate and Climate Change

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Class 11 Geography Chapter 12 World Climate and Climate Change The answer to each chapter is provided in the list so that you can easily browse throughout different chapters SCERT Class 11 Geography Chapter 12 World Climate and Climate Change and select need one.

Class 11 Geography Chapter 12 World Climate and Climate Change

Also, you can read the SCERT book online in these sections Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. These solutions are part of SCERT All Subject Solutions. Here we have given Assam Board/NCERT Class 11 Geography Chapter 12 World Climate and Climate Change Solutions for All Subject, You can practice these here…

World Climate and Climate Change

Chapter: 12




Q.(1) Which one of the following is suitable for Koppen’ ‘A’ type of climate

(i) High rainfall in all the month.

(ii) Men’s monthly temperature of the coldest months is more than freezing point.

(iii)The monthly temperature of the months is more than 18℃.

(iv) Average temperature for all the months below 10℃.

Ans :(iii)The monthly temperature of the months is more than 18℃.

Q.(2) Koeppen’s system of classification of climates can be termed as- 

(i) Applied 

(ii) systematic

(iii) Genetic

(iv) Empirical

And:(iv) Empirical

Q.(3) Most of the Indian peninsula will be grouped according to Koren’s system under

(i) “At” 

(ii) “BSh”

(iii) “cfh”

(iv) “Am”


Q.(4) Which one of the following years is supposed to have recorded the warmest temperature the world over?

(i) 1990

(ii) 1998 

(iii) 1885

(iv) 1950

Ans : (ii) 1998 

Q.(5) which one of the following groups of four climates represents humid conditions?

(i) A-B-C-E

(ii) A-C-D-E

(iii) B-C-D-E

(iv) A-C-D-F

Ans: (ii) A-C-D-E

(b) Answer the following questions in about 30 words.

(1) which two climatic variations are used by koeppen for classifications of the climate?

Ans : The climatic classification which was forwarded by V koeppen was an empirical one . Mean annual and mean monthly temperature and precipitation data used by koeppen for classification of the climate.

(2) How is the ‘genetic’ system of classification different from the empirical one?

Ans : Genetic classification of climate attempts to organize climates according to their causes while the empirical classification is based on the observed data, particularly mean annual and mean monthly temperature and precipitation.

(3) Which types of climates have a very low range of temperature?

Ans: The tropical humid climates show the very low range of Temperature.

(4) What type of climatic conditions would prevail if the sun spots increased?

Ans: If the sunspots increase, the climatic ie. weather will become cooler and wetter and greater storminess may occur.

Chapter 1Geography As A Discipline
Chapter 2The Origin and Evolution of the Earth
Chapter 3Interior of the Earth
Chapter 4Distribution of Oceans And Continents
Chapter 5Minerals and Rocks
Chapter 6Geomorphic Processes
Chapter 7Landforms and Their Evolution
Chapter 8Composition and Structure of Atmosphere
Chapter 9Solar Radiation, Heat balance, and Temperature
Chapter 10Atmospheric Circulation and Weather Systems
Chapter 11Water in the Atmosphere
Chapter 12World Climate and Climate Change
Chapter 13Water (Oceans)
Chapter 14Movements of Ocean Water
Chapter 15Life on the Earth
Chapter 16Biodiversity And Conservation
Chapter 17Indian Location
Chapter 18Structure and Physiography
Chapter 19Drainage System
Chapter 20Climate
Chapter 21Natural Vegetation
Chapter 22Soils
Chapter 23Natural Hazards and Disasters

Answer the following questions in about 150 words.

(1) Make a comparison of the climatic conditions between the “A” and “B” types of climates.

Ans: “A”Climatic conditions : Climatic type “A” is known as the Tropical Humid climate. It exists between the Tropic of Cancer and the Tropic of Capricorn.

The Sun is overhead throughout the year of this belt. The presence of Inter Tropical Convergence(ITCZ) makes the climate hot and humid. The annual range of temperature is very low and annual rainfall is high.

“A” group of climate is divided into three types: 

(a) At-Tropical wet climate

(b) Am-Tropical monsoon climate

(c) Aw-Tropical wet and dry climate 

“B” Climatic conditions: Climatic type “B” is known as the Dry climate. These climates cover a very large area from 15°-60°N and S of the equator. At low latitudes, from 15°-30° they occur in the area of subtropical high where subsidence and inversion of temperature do not produce rainfall. In middle latitudes from 35°-60° north and south of the equator, they are confined to the interior of continents where maritime humid winds do not reach and to areas often surrounded by mountains.

Rainfall is very low which is not adequate for the growth of plants.

B-group of climate is divided into two main division followed by subdivisions: 

(a) BS- Steppe or semi-arid climate 

(b) BW- Desert climate 

Q.2. What type of vegetation would you find in the “C” and “A” type(s) of climate?

Ans: Vegetation in “C” type of climate: The “C” type of climate belongs to warm temperate climates. It extends from 30°-50° latitudes mainly on the eastern and western margins of continents. Because of its temperate location different types of vegetation of this climate are Mediterranean type, humid subtropical type and marine west coast type.

Vegetation in “A” type climate: The”A” type of climate belongs to tropical humid climates and monsoon climate. The vegetation of this climate belongs to tropical humid and monsoon. 

Q.3. What do you understand by the term “Greenhouse Gases”? Make a list greenhouse gases.

Ans: The term greenhouse is derived from the analogy to a greenhouse used in cold areas for preserving heat. The Atmosphere is behaving like a greenhouse. The atmosphere transmits the incoming solar radiation but absorbs the vast majority of long wave radiation emitted upwards by the earth’s surface. The gases that absorb long wave radiation are called ‘ greenhouse gases’.

The noted greenhouse gases are: 

1. Carbon dioxide(Co₂)

2. Chlorofluorocarbons (CFC₃)

3.Methane (CH₄)

4.Nitrous Oxide (N₂O)

5.Ozone (O₃)

6.Nitric Oxide (NO)

7.Carbon Monoxide (CO)

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