Class 11 Geography Chapter 12 World Climate and Climate Change

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

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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

PART-1

GEOGRAPHY

TEXTUAL QUESTION & ANSWER

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”

Ans:(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.

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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