123. The annual range of temperature in the interior of the continents is high as compared to coastal areas. What is/are the reason/reasons? (2013)

  1. Thermal difference between land and water 
  2. Variation in altitude between continents and oceans 
  3. Presence of strong winds in the interior 
  4. Heavy rains in the interior as compared to coasts

 

 Select the correct answer using the code given below: 

(a) 1 only 

(b) 1 and 2 only 

(c) 2 and 3 only 

(d) 1, 2, 3 and 4 

 

Answer: (a)

 Statement 1 is correct:

 As compared to the landmass, water heats up or cools down slowly. Due to this thermal difference between land and water, the annual range of temperature in the interior of the continents is high as compared to coastal areas. 

O India is flanked by the Indian Ocean on three sides in the south and girdled by a high and continuous mountain wall in the north. As compared to the landmass, water heats up or cools down slowly. This differential heating of land and sea creates different air pressure zones in different seasons in and around the Indian subcontinent. Difference in air pressure causes reversal in the direction of monsoon winds. 

O Variation in altitude between continents and oceans has little impact on the annual range of temp. But Temperature decreases with height. Due to thin air, places in the mountains are cooler than places on the plains. (Statement 2 is not correct) 

O Presence of strong winds in the interior is not a main contributing factor for temperature variability. Rainfall is heavier in coastal areas than interior generally. (Statement 3 and statement 4 are not correct)

 EliminationTechnique: Variation in altitude between continents and oceans has nothing to do with the range of temperature in the interior of the continents. So, by eliminating the statement 2, we can get the answer A.

 

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