In the tropical zone, the western sections of the oceans are warmer than the eastern sections owing to the influence of trade winds.
In the temperate zone, westerlies make the eastern sections of oceans warmer than the western sections.
Which of the statements given above is/are correct?
Correct Answer:
(C) Both 1 and 2
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 warmer. So, both the statements are correct.
Ques: 2
Given below are two statements, one is labelled as Assertion (A) and other as Reason (R) :
Assertion (A): Wind patterns are clockwise in the northern hemisphere and anti-clockwise in the southern hemisphere.
Reason (R): The directions of wind patterns in the northern and the southern hemisphere are governed by the Coriolis effect.
Code:
(A) and (R) are true, and (R) is the correct explanation of
(A)
Correct Answer:
(A) and (R) are true, but (R) is not the correct explanation of
Ques: 3
Westerlies in the southern hemisphere are stronger and persistent than in the northern hemisphere because?
Southern hemisphere has less landmass as compared to northern hemisphere
Coriolis force is higher in the southern hemisphere as compared to the northern hemisphere.
Which of the statements given above is/are correct?
Correct Answer:
(A) 1 only
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 passes 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 50° latitude and 'Shrieking sixties' at 60° latitudes.
Ques: 4
Consider the following statements about the 'Roaring Forties':
They blow uninterrupted in the northern and southern hemispheres
They blow with great strength and constancy
Their direction is generally from north - west to east in the southern hemisphere
Overcast skies, rain and raw weather are generally associated with them
Which of these statements are correct?
Correct Answer:
(B) 2, 3 and 4
The Roaring Forties are strong westerly winds that blow in the Southern Hemisphere, generally between the latitudes of 40°- 50°. 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. Wellington (New Zealand) is the only capital in the “Roaring Forties” latitudes.
Ques: 5
What is the effect of Chinook winds in the central plains in the USA?
Correct Answer:
(A) Temperature of winter rises
Chinook means “snow-eater”. Chinook winds are most common during winter and early spring along the eastern slopes of the Rocky Mountains from Colorado (USA) into British Columbia (Canada) in the north. Chinook is a hot wind that blows in winter and therefore raises the temperature within a short time. The increase in temperature results in the melting of snow, making pasture land available for grazing of animals.
Ques: 6
What causes the wind to deflect toward the left in the southern hemisphere?
Correct Answer:
(C) Rotation of the earth
Deflection of winds to the right direction in the northern hemisphere and to the left in the southern hemisphere is due to Coriolis force. Coriolis force arises due to the rotation of the earth on its axis.
Ques: 7
The winds flowing from high-pressure area toward the Mediterranean sea are-
Correct Answer:
(B) Trade wind
The Mediterranean Sea is located between 30°- 40° latitude. This area is under a subtropical high-pressure dynamic belt. Summer trade wind and westerly(anti-trade) winter wind blows from this latitude. It means Westerly blows from this latitude toward the north-east and trade wind flows from this latitude toward north-west.
Ques: 8
The seasonal reversal of winds is the typical characteristic of –
Correct Answer:
(C) Monsoon climate
Monsoon are those seasonal winds whose direction reverses as per the season. For six months during summer, these winds flow from ocean to land and during the winter season, these winds flow from land to sea. According to Dr. Rama Shastry, "Monsoonal winds blow on a large scale over an expanded region. Their direction reverses as per the change in season. According to Dr. H.G . Dubey," Reversal of wind system is the keynote of monsoonal climate. Hence, option (c) is the correct answer.
Ques: 9
Match List-I with List-II and select the correct answer using the codes given below the lists.
List-I (Local Wind)
A. Foehn B. Simoom
C. Santa Ana D. Zonda
List-II (Region)
1. Argentina 2. Kurdistan
3. California 4. Alps
Code :
A B C D
Correct Answer:
(B) 4 2 3 1
Foehn- A warm dry wind blowing down the northern slopes of the Alps. It most influences the weather of Switzerland. Simoom- Strong, dry wind that blows in the desert of Arabia, Kurdistan. Santa Ana - The local wind of southern California. Zonda - The local wind blows on the eastern slope of the Andes in Argentina.
Ques: 10
Which one of the following pairs is not correctly matched?
Correct Answer:
(C) Mistral - Rhine Valley
Mistral is a cold wind blowing in the southern region of France. It is strong in the winter and spring season. It blows along the Mediterranean coast from northern Spain to northern Italy. It is more frequently in the lower Rhone valley. It is purely a Katabatic wind that flows at a speed of 130 kph. Thus option (c) is not correctly matched. Other options are correctly matched.
Ques: 11
Which one of the following is not correctly matched?
Correct Answer:
(C) Blizzard-Chile
Chinook - It is a local wind that blows in the east of Rockies mountain, USA.
Sirocco - wind blows from the Sahara desert toward the north-east direction of the Mediterranean Sea and enters Sicily (Italy), Spain and other European countries.
Blizzard- A blizzard is a long-lasting snowstorm with very strong winds and intense snowfall. It flows through South Pole, Siberia, Canada, and the U.S.A. Chile does not fall on its way.
Norwester - It is a local wind of India also called ‘Kalbaisakhi.