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WORLD GEOGRAPHY
How to Approach World Geography
The major part of Physical Geography, various concepts and phenomena’s related to it come under World geography. Hence the topics under World Geography might seem to be vast. But covering these topics will not only help you in strengthening your conceptual understanding of Geography but also in Environment section (which forms a major part in UPSC prelims examination)
The Earth and the Universe
Focus:
Example (2011 Prelims Questions Paper):
What is die difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material. 2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury. 3. Comets show a perceptible glowing tail, while asteroids do not. Which of the statements given above is/are correct? (a.) 1 and 2 only (b.) 1 and 3 only (c.) 3 only (d.) 1, 2 and 3 Solution (b) |
Example (2012 Prelims Questions Paper):
Consider the following factors:
1. Rotation of the Earth 2. Air pressure and wind 3. Density of ocean water 4. Revolution of the Earth Which of the above factors influence the ocean currents? (a) 1 and 2 only (b) 1, 2 and 3 (c) 1 and 4 (d) 2, 3 and 4 Solution (b) |
Landforms:
Focus
Note: You can expect match the following questions from ‘World Geographic features/landforms’
Example (2013 Prelims Questions Paper):
Which one of the following pairs is correctly matched?
Geographical Feature Region (a) Abyssinian Plateau : Arabia (b) AtlasMountains : North-Western Africa (c) Guiana Highlands : South-Western Africa (d) OkavangoBasin : Patagonia Solution (b) |
Example (2014 Prelims Questions Paper):
Which of the following phenomena might have influenced the evolution of organisms?
1. Continental drift 2. Glacial cycles Select the correct answer using the code given below. A. 1 only B. 2 only C. Both 1 and 2 D. Neither 1 nor 2. Solution (c) |
Atmosphere: (An important topic from Prelims point of view)
Focus:
Example (2011 Prelims Questions Paper):
A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why?
1. The presence of ozone causes the reflection of radio waves to Earth. 2. Radio waves have a very long wavelength. Which of the statements given above is/are correct? (a.) 1 only (b.) 2 only (c.) Both 1 and 2 (d.) Neither 1 nor 2 Solution (d) |
Example (2012 Prelims Questions Paper):
Normally, the temperature decreases with the increase in height from the Earth’s surface, because
1. the atmosphere can be heated upwards only from the Earth’s surface 2. there is more moisture in the upper atmosphere 3. the air is less dense in the upper atmosphere Select the correct answer using the codes given below : (a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3 Solution (a) |
Wind System
Focus:
Example (2011 Prelims Questions Paper):·
The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole? (2011)
(a.) Presence of prominent tropo-spheric turbulence; and inflow of chlorofluorocarbons (b.) Presence of prominent polar front and stratospheric’ clouds; and inflow of chlorofluorocarbons (c.) Absence of polar front and stratospheric clouds; and inflow of methane and chlorofluorocarbons (d.) Increased temperature at polar region due to global warming Solution (b) |
Example (2013 Prelims Questions Paper):
During a thunderstorm, the thunder in the skies is produced by the: (2013)
1. meeting of cumulonimbus clouds in the sky 2. lightning that separates the nimbus clouds 3. violent upward movement of air and water particles Select the correct answer using the codes given below. (a) 1 only (b) 2 and 3 (C) 1 and 3 (d) None of the above produces the thunder Solution (d) |
Clouds and Precipitation
Focus: