The Winds

The direction of trade winds in the tropics is from east to west, due to this, when the warm terrestrial wind reaches the ocean located to the west of the landmass, it raise the temperature of those oceans. In the temperate zone, the westerly wind blows from west to east, in which the eastern sections of the oceans become more warm. So both the statements are correct.

The horizontal winds near the earth surface respond to the combined effect of three forces - the pressure gradient force, Frictional Force and the Coriolis force: The rotation of the Earth on its axis affects the direction of the wind. This force is called the Coriolis force after the French physicist G.G. Coriolis who described this force. It deflects the wind to the right(clockwise) direction in the Northern Hemisphere and to the left(anti-clock) in the Southern Hemisphere. Hence, both assertion (A) and reason(R) are true and reason (R) is the correct explanation of assertion (A).

The horizontal winds near the earth surface respond to the combined effect of three forces - the pressure gradient force, Frictional Force and the Coriolis force: The rotation of the Earth on its axis affects the direction of the wind. This force is called the Coriolis force after the French physicist G.G. Coriolis who described this force. It deflects the wind to the right(clockwise) direction in the Northern Hemisphere and to the left(anti-clock) in the Southern Hemisphere. Hence, both assertion (A) and reason(R) are true and reason (R) is the correct explanation of assertion (A).

Coriolis force is the force that is responsible for the deflection of the winds in the northern and the southern hemispheres. It is also known as the impact of Ferrel's law.20

According to Ferrel's law, any moving fluid turns right in the northern hemisphere while in the southern hemisphere it turns left.

This Coriolis force that causes the deflection in both these hemispheres is generated due to the movement of the earth on its axis, i.e. rotation.

The westerlies are prevailing wind from the west towards the east between sub-tropical high-pressure zone (30°-35°) and sub polar low pressure (60°-65°). These winds are more complicated in the northern hemisphere due to the larger expansion of land. These are less active during summer and more active in winter. As these pass over the sea, these carry moisture and cause rain. Due to the lesser expansion of land in the southern hemisphere, these winds become extremely powerful and turn into a storm. Due to its intensity in the southern hemisphere, it is called 'Roaring Forties' at 40° latitude, 'Furious fifties' at 50º latitude and 'Shrieking sixties' uses at at 60º latitude.

The westerlies are prevailing wind from the west towards the east between sub-tropical high-pressure zone (30°-35°) and sub polar low pressure (60°-65°). These winds are more complicated in the northern hemisphere due to the larger expansion of land. These are less active during summer and more active in winter. As these pass over the sea, these carry moisture and cause rain. Due to the lesser expansion of land in the southern hemisphere, these winds become extremely powerful and turn into a storm. Due to its intensity in the southern hemisphere, it is called 'Roaring Forties' at 40° latitude, 'Furious fifties' at 50º latitude and 'Shrieking sixties' uses at at 60º latitude.

Roaring forties, furious fifties and shrinking sixties winds flow in the Southern hemisphere of the earth. They were given these name on the basis of the extensity of the Westerly winds in the Southern hemisphere.

The Roaring Forties are strong westerly winds that blow in the Southern Hemisphere, generally near the latitudes of 40°. Roaring Forties are stormy in nature. The strong north-west to east air currents are caused by the combination of air being displaced from the Equator towards the South Pole and the Earth's rotation. The Roaring Forties bring overcast skies, rains, and cold temperatures. Therefore, statement (2),(3) and (4) are correct.

The Roaring Forties are strong westerly winds that blow in the Southern Hemisphere, generally near the latitudes of 40°. Roaring Forties are stormy in nature. The strong north-west to east air currents are caused by the combination of air being displaced from the Equator towards the South Pole and the Earth's rotation. The Roaring Forties bring overcast skies, rains, and cold temperatures. Therefore, statement (2),(3) and (4) are correct.

The Roaring Forties are strong westerly winds that blow in the Southern Hemisphere, generally near the latitudes of 40°. Roaring Forties are stormy in nature. The strong north-west to east air currents are caused by the combination of air being displaced from the Equator towards the South Pole and the Earth's rotation. The Roaring Forties bring overcast skies, rains, and cold temperatures. Therefore, statement (2),(3) and (4) are correct.