Tag: winds

Questions Related to winds

La Nina affects the _________.

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. Atlantic hurricanes

  2. Polar cyclones

  3. Both A and B

  4. None of these

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Correct Option: A
Explanation:

The hurricane impacts of El Niño and its counterpart La Niña are opposite and alternating between the Pacific and Atlantic oceans, strengthening hurricane activity in one region while weakening it in the other. However, the effect is limited to the climate of the tropics and subtropics.

Which of the following does not have an influence over the climate on India?

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. Monsoons

  2. Nearness to equator

  3. Ocean currents

  4. Presence of Indian ocean

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Correct Option: C
Explanation:

Ocean currents does not have influence over the climate in India. Ocean currents act much like a conveyer belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.

The unseasonable rain in Gujarat is locally known as _____________.

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. mavthu

  2. Kal Biasakhi

  3. loo

  4. el-nino

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Correct Option: A

Which of the following factors affect the climate of a place?

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. Latitude

  2. Distance from the sea

  3. Altitude

  4. All of the above

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Correct Option: D

Which of the following does not have influence over the climate of India?

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. Nearness to Equator

  2. Presence of Indian Ocean

  3. Monsoons

  4. Ocean currents

Show answer
Correct Option: D

The western disturbances which cause winter rain in India originate in _____.

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. Pakistan

  2. Bay of Bengal

  3. West Asia

  4. Himalayas

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Correct Option: C
Explanation:
West Asia.
Western Disturbance is an extratropical storm, which give rain to North and Northwest India during winter. It is very useful for wheat and winter crops. It is driven by westerlies (westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude.)
Western Disturbances originate from the Mediterranean sea, the Black sea, and the Caspian sea. From this region and from Atlantic ocean they collect the moisture and move eastward.

In the extratropical zone frontogenesis (a process in which two air masses of different densities come together to form a front) process take place which in turn facilitates the formation of the cyclone. These types of cyclones occurring over mid-latitude are called extratropical cyclones. They travel as a family and reaching north India one by one.  They are more in frequency in the winter season as westerlies are stronger in winter. They approach India by traveling across Iraq, Iran, Afghanistan, and Pakistan. They are mainly lower tropospheric systems that show variation in strength and vertical extent with superimposition of a mid and upper tropospheric trough in westerlies.

How do the western disturbances affect the crops in north India?

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. They cause heavy damage to the standing crops

  2. They bring in locusts which destroy the crops

  3. They are beneficial to the crops by causing winter rain

  4. They help in keeping the plants warm to some extent in winter

Show answer
Correct Option: C
Explanation:

They are beneficial to the crops by causing winter rain.
They are the cause of most winter and pre-monsoon season rainfall across northwest India. Precipitation during the winter season has great importance in agriculture, particularly for the rabi crops.  Excessive precipitation due to western disturbances can cause crop damage, landslides, floods and avalanches.

Match List I with List II and select the correct answer by using the codes given below the lists:

List-I (Climatic conditions) List-II (Resons)
A. Chennai is warmer than Kolkata 1. North-East Monsoon
B. Snowfall in Himalayas 2. Altitude
C. Rainfall decreases from West Bengal to Punjab 3. Western depressions
D. Sutlej-Ganga Plain gets some rains in winter 4. Distance from sea
5. Latitude
geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. A - 1, B - 2, C - 4, D - 5

  2. A - 4, B - 5, C - 1, D - 3

  3. A - 5, B - 2, C - 4, D - 3

  4. A - 5, B - 1, C - 3, D - 4

Show answer
Correct Option: C
Explanation:
A. Chennai is warmer than Kolkata - Latitude
B. Snowfall in the Himalayas - Altitude
C. Rainfall decreases from West Bengal to Punjab - Distance from sea
D. Sutlej-Ganga Plain gets some rains in winter - Western depressions
                                                                                      

The subtropical westerly jet stream moves towards the north of the Himalayas with the apparent movement of the sun in ________.

geography pressure belts and winds climate and seasons winds atmospheric pressure and winds

  1. Winters

  2. Advancing monsoon

  3. Retreating monsoon

  4. Summers

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Correct Option: D
Explanation:
These jet streams are located approximately over 27°-30° north latitude, therefore, they are known as subtropical westerly jet streams. Over India, these jet streams blow south of the Himalayas, all through the year except in summer. The western cyclonic disturbances experienced in the north and north-western parts of the country are brought in by this westerly flow in winters. In summer, the subtropical westerly jet stream moves north of the Himalayas with the apparent movement of the sun.

The horizontal movement of air is called ________.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. Wind

  2. Storm

  3. Cyclone

  4. Both A and C

Show answer
Correct Option: A
Explanation:

Wind is defined as the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction whereas breeze is the gentle wind.