Chapter 9: Atmospheric Circulation and Weather Systems — Online MCQ Test
GEOGRAPHY · Grade 11 · CBSE(NCERT)
Practice Chapter 9: Atmospheric Circulation and Weather Systems with a free chapter-wise online MCQ test.
This chapter covers: Pressure belts winds monsoon cyclones anticyclones atmospheric circulation weather systems global winds climate dynamics.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 9: Atmospheric Circulation and Weather Systems — Important Questions & Answers
Which pressure belt is located near 30° north and 30° south latitudes?
- A. Equatorial low-pressure belt
- B. Subtropical high-pressure belt
- C. Subpolar low-pressure belt
- D. Polar high-pressure belt
Answer: B. Subtropical high-pressure belt
The subtropical high-pressure belts are found around 30° N and 30° S due to descending air in the Hadley cell.
The subtropical high-pressure belts are found around 30° N and 30° S due to descending air in the Hadley cell.
The Coriolis force causes winds in the Northern Hemisphere to deflect toward the:
- A. Left
- B. Right
- C. Upward
- D. Downward
Answer: B. Right
Because of Earth's rotation, moving air is deflected to the right in the Northern Hemisphere.
Because of Earth's rotation, moving air is deflected to the right in the Northern Hemisphere.
Which statement best explains why monsoons reverse direction seasonally?
- A. Earth’s axis changes direction every season
- B. Differential heating of land and sea causes seasonal pressure differences
- C. Trade winds stop blowing during summer
- D. Ocean currents reverse every six months
Answer: B. Differential heating of land and sea causes seasonal pressure differences
Monsoons are caused by seasonal pressure contrasts between land and sea due to differential heating.
Monsoons are caused by seasonal pressure contrasts between land and sea due to differential heating.
Which sequence correctly shows the general circulation of air from the equator toward the poles in one hemisphere?
- A. Polar easterlies → Westerlies → Trade winds
- B. Trade winds → Westerlies → Polar easterlies
- C. Westerlies → Trade winds → Polar easterlies
- D. Trade winds → Polar easterlies → Westerlies
Answer: B. Trade winds → Westerlies → Polar easterlies
From the equator to the poles, the major wind belts are trade winds, then westerlies, and finally polar easterlies.
From the equator to the poles, the major wind belts are trade winds, then westerlies, and finally polar easterlies.
Which statement is most accurate about tropical cyclones in the Northern Hemisphere?
- A. They rotate clockwise and develop over cold ocean water
- B. They rotate anticlockwise and form over warm ocean water
- C. They rotate anticlockwise and form over deserts
- D. They rotate clockwise and form over continents
Answer: B. They rotate anticlockwise and form over warm ocean water
Tropical cyclones in the Northern Hemisphere rotate anticlockwise due to Coriolis force and develop over warm oceans.
Tropical cyclones in the Northern Hemisphere rotate anticlockwise due to Coriolis force and develop over warm oceans.