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Chapter 11: World Climate and Climate Change - Class 11 Geography Extra Notes

 WORLD CLIMATE AND CLIMATE CHANGE

( To be tested through internal assessments in the form of project and presentation) 

MCQs:

1. Which type of climate he expressed by the letter code ET?

  • a) Tropical monsoon
  • b) Mediterranean
  • c) Subtropical
  • d) Tundra

2. Which protocol was held for reducing the emission of greenhouse gases into the atmosphere in 1997?

  • a) Rio de Janeiro Earth Summit
  • b) Kyoto Protocol
  • c) Johnsonburg meet
  • d) Copenhagen Meet

3. Which one of the followings is not a greenhouse gas?

  • a) Carbon dioxide
  • b) Chlorofluorocarbons
  • c) Methane
  • d) Oxygen

4. Which gas does absorb ultraviolet rays in the stratosphere ?

  • a) Ozone
  • b) Nitrogen
  • c) carbon dioxide
  • d) Methane

5. What are called the materials thrown in atmosphere by volcanic eruptions?

  • a) Aerosols
  • b) solid waste
  • c) Alcohol
  • d) Carbonyl oxide

6. At which place the highest said temperature of 58°C was recorded in Libya on 13 September 1922 ?

  • a) Tripoli
  • b) Al Aziziyah
  • c) Taiwan
  • d) Tikari

7. Koppen’s system of classification of climates can be termed as:

  • a) Applied
  • b) Systematic
  • c) Genetic
  • d) Empirical

8. Most of the Indian peninsula will be grouped according to Koppen’ssystem under :

  • a) Af
  • b) BSh
  • c) Cfb
  • d) Am

9. Koppen’sclassification of climate is based on:

  • a) Temperature
  • b) Precipitation
  • c) Both
  • d) None

10. Identify the broad approaches adopted for classifying climate.

  • a) Empirical
  • b) Genetic
  • c) Applied
  • d) All

11. The largest concentration of greenhouse gases in the atmosphere is :

  • a) Carbon dioxide
  • b) Nitrous oxide
  • c) Methane
  • d) CFCs

12. SOURCE BASED QUESTIONS:

The term greenhouse is derived from the analogy to a greenhouse used in cold areas for preserving heat. A greenhouse is made up of glass . The glass which is transparent to incoming short wave solar radiation is opaque to outgoing longwave radiation. The glass, therefore, allows in more radiation and prevents the long wave radiation going outside the glass house, causing the temperature inside the glasshouse structure warmer than outside. When you enter a car or a bus, during summers, where windows are closed, you feel more heat than outside. Likewise during winter the vehicles with closed doors and windows remain warmer than the temperature outside. This is another example of greenhouse effect.

I) For which area is greenhouse effective?

  • a) Cold
  • b) Hot
  • c) Both
  • d) None

II) Incoming solar radiation come in form of:

  • a) Short waves
  • b) Long waves
  • c) Both
  • d) None

III) Why do we feel more heat than outside, When we enter into a car or a bus, during summers, where windows are closed?

  • a) Due to greenhouse effect
  • b) Due to cold house effect
  • c) Due to bamboo house effect
  • d) All

IV) The glass in greenhouse is opaque for:

  • a) Long wave radiation
  • b) Short wave radiation
  • c) Both
  • d) None

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

ANS.- Greenhouse gases are those gases which cause global warming and result in rising in atmospheric temperature. These gases absorb long wave radiation. The processes that warm the atmosphere are often collectively referred to as the greenhouse effect.

Greenhouse Gases are-Carbon dioxide, Chlorofluorocarbons, Methane, Nitrous oxide, Ozone, Nitric oxide, Carbon monoxide etc.

14. What is global warming? What are its effects.

ANS. –The increasing trend in concentration of greenhouse gases in atmosphere may, in the long run, warm up earth. It is called global warming.

Followings are its effects:

  • i) Rise in the sea level
  • ii) Loss of coastal land
  • iii) A change in precipitation pattern
  • iv) Increased risks of droughts and floods
  • v) Threats to biodiversity.