Examkin

Soru

Zorluk: ZorPhysical Geography of the World

With reference to global atmospheric circulation and planetary wind systems, consider the following statements:

1. The Westerlies in the Southern Hemisphere are stronger and more persistent than those in the Northern Hemisphere due to the dominant ocean expanse.
2. The Trade Winds blow from the Subtropical High-Pressure Belts toward the Equatorial Low-Pressure Belt, deflecting to the right in the Northern Hemisphere due to the Coriolis force.
3. The Subtropical High-Pressure Belts are thermally induced pressure zones created by intense ground surface heating near the horse latitudes.

Which of the statements given above is/are correct?

  1. 1 and 2 onlyCevap
  2. B
    2 and 3 only
  3. C
    1 and 3 only
  4. D
    1, 2 and 3

Cevap

The correct answer is the option stating that only statements 1 and 2 are correct.
The statement highlighting that the Westerlies are stronger in the Southern Hemisphere is accurate due to the lack of continental friction over massive oceanic expanses. The statement describing Trade Wind movement and rightward Coriolis deflection in the Northern Hemisphere is also correct. However, the statement asserting that Subtropical High-Pressure Belts are thermally induced is incorrect because they are dynamically formed by the descent of upper-air masses.

Adım Adım Çözüm

1
Evaluate Statement 1 regarding Southern Hemisphere Westerlies.
Statement 1 is correct.
The Southern Hemisphere has significantly less landmass compared to the Northern Hemisphere. Consequently, friction is minimal, causing the Westerlies to blow with much greater force and consistency (popularly known as the Roaring Forties, Furious Fifties, and Shrieking Sixties).
2
Evaluate Statement 2 regarding Trade Winds and Coriolis deflection.
Statement 2 is correct.
Air flows from high pressure at the Subtropical High-Pressure Belts (around 30° N/S) to low pressure at the Equatorial Low-Pressure Belt (ITCZ). As per Ferrel's Law, the Coriolis force deflects this moving air to the right in the Northern Hemisphere, forming Northeast Trade Winds.
3
Evaluate Statement 3 regarding the atmospheric origin of Subtropical High-Pressure Belts.
Statement 3 is incorrect.
Subtropical High-Pressure Belts are dynamically induced (mechanical origin). Air ascending at the equator cools, travels poleward aloft, accumulates around 30° N/S latitude, and subsides toward the surface, creating high pressure. Thermally induced belts are the Equatorial Low and Polar Highs.

Anahtar Kavram

Dynamic vs. Thermal Pressure Belts and Global Planetary Wind Circulation
Bu soruyu puanla

Konular

Physical Geography of the World

Bu konudan daha fazla soru