Bissoy.com
Doctors Medicines MCQs Q&A

Consider the following statements: 1. The winds which blow between 30° N and 60° S latitudes throughout the year are known as westerlies. 2. The moist air masses that cause winter rains in North-Western region of India are part of westerlies. Which of the statements given above is/are correct?

Consider the following statements: 1. The winds which blow between 30° N and 60° S latitudes throughout the year are known as westerlies. 2. The moist air masses that cause winter rains in North-Western region of India are part of westerlies. Which of the statements given above is/are correct? Correct Answer 2 only

The correct answer is 2 only.

Key Points

  • Westerlies are permanent winds. 
  • Westerlies are prevailing winds that flow from the west towards the East. 
  • It flows between 30°N-60°N and 30°S-60°S degrees latitude. Hence statement 1 is NOT correct.
  • It is also known as anti trades winds as it originates from the high-pressure area Horse latitude and flows towards the subpolar low-pressure area. 
  • The blows from South West to North East in the Northern hemisphere and from North west to the south east in the southern hemisphere. 
  • The westerlies are stronger in the Southern hemisphere due to the vast ocean and comparatively less land.  
  • They are best observed between 40 to 60-degree latitude and these latitudes are also known as Roaring forties, Furious fifties, and shrieking sixties.  
  • There are fluctuations in the subpolar region. Thus, they produce wet spells due to variation in weather.  

Important Points

  • The moist air masses that cause winter rains in the North-Western region of India part of Western disturbances that originate from the Mediterranean sea. Hence statement 2 is correct.

Related Questions

In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct.  1. The northeastern region presents a diverse system of habitats, ranging from tropical rainforests to alpine meadows. P. In eastern Himalayas the rainfall ranges from 125 to 300 cms, in Assam from 178 to 305 cms. Q. The temperature in the region varies with location, elevation,topography, rainfall and humidity. R. The uneven distribution affects the region in two opposite ways, floods and droughts. S. It is largely a humid tropical region with two periods of rainfall; the winter rains come from the west and the summer rains are brought by the monsoon winds. 6. The winter temperature in Shillong, for example, varies from 4°C to 24°C; in Gangtok, from 9°C to 23°C.
Which statements are incorrect regarding Chinook winds? 1. These winds blow on Rocky mountain. 2. These are the local winds. 3. These winds climb the Alps mountain from its south side. 4. These winds blow in the Rhine river valley.
Consider the following statements with reference to Tropical Moist Deciduous forest in India 1. Tropical Moist Deciduous forest is the least widespread forest in India. 2. Tropical Moist Deciduous forest is comparatively easy to exploit these forests due to their high degree of gregariousness. 3. The trees of Tropical Moist Deciduous forest drop their leaves during the spring and early summer when sufficient moisture is not available. Which of the statements given above is/are not correct?
Consider the following statements regarding winds 1. The air at ITCZ rises and moves towards poles in the upper atmosphere and sinks near 30 degrees in both hemispheres and then again moves toward the equator at the surface, this cycle is known as Walker Cycle. 2. At polar latitudes the cold dense air subsides near the poles and blows towards middle latitudes as the polar easterlies. This cell is called the polar cell. Which of the statements given above is/are correct?
Consider the following statements- 1. These winds blow from the subtropical high-pressure belts towards the sub-polar low-pressure belts. 2. They are stronger in the southern hemisphere.  3. These winds are best developed between 40° and 65°S latitudes. Statements given-above are about which planetary wind?
Consider the following statements about Equatorial Low Pressure Belt. 1. It lies between 10°N and 10°S latitudes. 2. This belt is characterized by extremely low pressure with calm conditions. 3. The corresponding latitudes of Equatorial Low Pressure belt are called horse latitudes. Which of the statements given above is/are correct:
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A:  Simultaneously, the Thar Desert plays a role in attracting moisture-laden southwest summer monsoon winds that, between June and October, provide the majority of India's rainfall. B: India is home to an extraordinary variety of climatic regions, ranging from tropical in the south to temperate and alpine in the Himalayan north, where elevated regions receive sustained winter snowfall.  C: The nation's climate is strongly influenced by the Himalayas and the Thar Desert. D: The Himalayas, along with the Hindu Kush mountains in Pakistan, prevent cold Central Asian katabatic winds from blowing in, keeping the bulk of the Indian subcontinent warmer than most locations at similar latitudes.
In the graph below, the concentration of a particular pollutant in a lake is plotted over (alternate) days of a month in winter (average temperature 10 °C) and a month in summer (average temperature 30 °C) Consider the following statements based on the data shown above: i) Over the given months, the difference between the maximum and the minimum pollutant concentrations is the same in both winter and summer. ii) There are at least four days in the winter month such that the pollutant concentration on those days are within 1 ppm of the pollutant concentrations on the corresponding days in the winter month. Which one of the following options is correct?
Statements : All fruits are vegetables. All pens are vegetables. All vegetables are rains.

Conclusions :
I. All fruits are rains.
II. All pens are rains.
III. Some rains are vegetables.
Which of the following statement is correct? 1) Trade winds are strongest in the winter zone. 2) Westerlies winds are weakest in the summer zone.