These Atmospheric Circulation and Weather Systems Important Questions cover important NCERT concepts related to atmospheric pressure, planetary winds, circulation systems, cyclones, anticyclones and weather phenomena.
The chapter-wise questions include MCQs, one-word questions, assertion and reason questions and analytical descriptive questions useful for UPSC, SSC, Railways, State PSC, CUET, CBSE board exams and competitive examinations.
NCERT Page Coverage: Page 76–81
These MCQs from Atmospheric Circulation and Weather Systems help students revise important concepts related to atmospheric pressure, winds, circulation systems and cyclonic weather conditions.
Atmospheric pressure is caused by:
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Atmospheric pressure decreases with:
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The instrument used to measure atmospheric pressure is:
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Air moves from:
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The horizontal movement of air is called:
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Which force deflects winds due to Earth’s rotation?
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According to Ferrel’s Law, winds are deflected to the right in:
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The trade winds blow from:
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The calm zone near the equator is known as:
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Westerlies blow from:
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The Roaring Forties are associated with:
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Polar easterlies originate from:
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Monsoon winds reverse direction mainly due to:
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Local winds develop due to:
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A warm and dry local wind in Alps is called:
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The hot and dry summer wind in northern India is called:
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Cyclones are associated with:
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Air in a cyclone moves:
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Anticyclones are generally associated with:
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Tropical cyclones derive energy mainly from:
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| Question | Answer | Page Reference |
|---|---|---|
| What measures atmospheric pressure? | Barometer | Page 76 |
| What is horizontal movement of air called? | Wind | Page 77 |
| Which force deflects winds? | Coriolis force | Page 77 |
| Which law explains wind deflection due to Earth’s rotation? | Ferrel’s Law | Page 77 |
| Which calm equatorial zone is associated with rising air? | Doldrums | Page 78 |
| Which winds blow from subtropical highs to equatorial lows? | Trade winds | Page 78 |
| Which winds dominate between 30° and 60° latitudes? | Westerlies | Page 78 |
| Which winds originate from polar high pressure belts? | Polar easterlies | Page 78 |
| What are permanent winds also called? | Planetary winds | Page 78 |
| Which hot dry wind blows in northern India? | Loo | Page 79 |
| Which warm dry wind blows in Alps? | Foehn | Page 79 |
| Which weather system is associated with low pressure? | Cyclone | Page 80 |
| Which weather system is associated with high pressure? | Anticyclone | Page 80 |
| What is calm centre of cyclone called? | Eye | Page 81 |
| Which cyclones form along polar front? | Temperate cyclones | Page 81 |
| Which cyclones derive energy from warm oceans? | Tropical cyclones | Page 81 |
| Which force drives air from high pressure to low pressure? | Pressure gradient force | Page 77 |
| Which pressure belt is found near 30° latitudes? | Subtropical high pressure belt | Page 78 |
| Which pressure system generally causes clear weather? | Anticyclone | Page 80 |
| Which winds are strongest in Southern Hemisphere westerlies? | Roaring Forties | Page 78 |
Assertion (A): Atmospheric pressure decreases with altitude.
Reason (R): Density of air decreases with increasing height.
Options:
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Assertion (A): Winds blow from high pressure to low pressure regions.
Reason (R): Pressure gradient force causes movement of air.
Options:
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Assertion (A): Winds are deflected due to Earth’s rotation.
Reason (R): Coriolis force affects direction of moving air.
Options:
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Assertion (A): Doldrums experience calm conditions.
Reason (R): Air rises vertically in equatorial low pressure belt.
Options:
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Assertion (A): Westerlies blow from west to east.
Reason (R): Coriolis force deflects winds in temperate regions.
Options:
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Assertion (A): Monsoon winds reverse direction seasonally.
Reason (R): Differential heating of land and water changes pressure conditions.
Options:
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Assertion (A): Cyclones are associated with low pressure.
Reason (R): Air converges and rises upward in cyclonic systems.
Options:
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Assertion (A): Anticyclones generally produce clear weather.
Reason (R): Descending air prevents cloud formation.
Options:
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Assertion (A): Tropical cyclones derive energy from warm oceans.
Reason (R): Warm oceans provide moisture and latent heat.
Options:
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Assertion (A): Temperate cyclones form along polar fronts.
Reason (R): Warm and cold air masses interact strongly in these regions.
Options:
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Explain the meaning and importance of atmospheric pressure.
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Discuss the factors affecting atmospheric pressure distribution.
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Explain the concept of pressure gradient force.
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Discuss the role of Coriolis force in atmospheric circulation.
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Explain Ferrel’s Law with suitable examples.
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Describe the planetary wind system of Earth.
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Explain the characteristics of trade winds.
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Discuss the importance of westerlies in global circulation.
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Explain the formation and significance of doldrums.
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Discuss the characteristics of polar easterlies.
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Explain the causes and mechanism of monsoon winds.
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Describe important local winds of the world.
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Differentiate between cyclones and anticyclones.
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Explain the formation and characteristics of tropical cyclones.
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Discuss the characteristics of temperate cyclones.
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