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Geography Que-Ans: [2 Marks Each]

Temperature · Gujarat Board (GSEB) STD 11 Arts (GSEB - English Medium). 8 questions.

Questions

Que-Ans: [2 Marks Each]

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8 questions · timed · auto-graded

Question 12 Marks
Temperature decreases as we go above the Earths surface. Give a reason.
Answer
The temperature decreases with altitude.
Under normal conditions, the average elevation above the earth's surface is $6.5$ degrees Celsius at $1000$ meters.
The temperature drops.
This decrease is felt only in the turbulence of the atmosphere.
The first part of the atmosphere receives heat from the earth's surface.
The upper atmosphere then warms up slowly.
So the temperature decreases as it rises above the surface of the earth.
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Question 42 Marks
There is less heat in the polar regions-Give reason.
Answer
The temperature gradually decreases from the equator to the poles.
The sun's rays always fall in a perpendicular direction above the equator.
So the temperature there is always high.
Rays from the equator to the poles have to pass through more layers of the atmosphere. That is why their heat decreases.
Sunburn is more absorbed in dense environments.
While less absorbed in thin environments.
The atmosphere above the equator is thin.
As the air towards the poles condenses.
So the temperature changes from the equator to the pole.
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Question 52 Marks
Diagonal rays give less heat. Give a reason.
Answer
  • Since the earth is round, the sun's rays fall directly on one part of it and are diagonal on the other at the same time.
  • Direct rays spread over a small area of ​​the earth's surface.
  • So there gets more sunshine.
  • So more heat is felt.
  • When the sun's rays move diagonally from the ionospheres to the poles.
  • So the temperature gradually decreases towards the poles.
  • Thus, diagonal rays give less heat and direct rays give more heat.
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Question 62 Marks
The regions near the equator receive more heat. Give a reason.
Answer
  • The temperature gradually decreases from the equator to both poles.
  • But above the equator the sun's rays always fall in a vertical direction.
  • So the temperature stays high for many months.
  • The rays from the equator to the poles have to pass through more layers of the atmosphere.
  • So the heat goes down.
  • The regions near the equator receive more sunlight.
  • So the heat is felt even more.
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Question 72 Marks
In certain circumstances the temperature of the atmosphere increases rather than decreases.
Answer
  • A situation where the temperature of the atmosphere rises instead of decreasing is called "reverse temperature".
  • Busy temperatures are caused by the combined effect of factors such as long nights in winter, calm and dry air, clear skies and snow-covered terrain.
  • The Earth's surface and its atmosphere cool down very quickly. At such times the elevated layers of the atmosphere are still relatively warm.
  • As a result, the air temperature rises as the atmosphere rises.
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Question 82 Marks
"Temperatures are found to be uneven in continental land regions." Why?
Answer
  • As the sun's rays move diagonally from the equator to the north or south poles, the temperature drops.
  • The temperatures of coastal areas are even and the temperatures of landlocked areas are odd.
  • The difference between the daily period and the annual period of temperature is more in continental land areas.
  • While the temperature of the land areas near the coast remains the same.
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