Tag: monsoon phenomena and its mechanism

Questions Related to monsoon phenomena and its mechanism

Periodic wind blow during particular time of the _______ or __________.

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

  1. Day, Year

  2. Day , Month

  3. Day , periods

  4. None of these

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Correct Option: A
Explanation:

The winds which change their direction periodically with the change in season are known as periodic winds. They blow at regular intervals. They blow during particular time of the day or year. Localized differences in pressure and temperature are the main cause of periodic winds. For example, land and sea breezes and the seasonal wands.

Days without any wind are recorded as _______.

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

  1. Day of relax

  2. Day of calm

  3. Day of winter

  4. None of these

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Correct Option: B
Explanation:

A wind rose diagram summarizes information about wind at a particular location over a specific period of time. It gives the percentage of time for which the wind blows from each direction, the strengths of these winds and the percentage of time calm air or light winds are observed. 

Wind is  ________ movement of air.

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

  1. Vertical

  2. Horizontal

  3. Both a and b

  4. None of these

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Correct Option: B
Explanation:

Wind is the horizontal movement of the air. The differences in air pressure within our atmosphere causes the wind. Under high pressure, air moves towards area of low pressure. The greater the difference in pressure, the faster the air flows. Wind is described with direction and speed. The direction from which the wind is blowing describes the direction of wind.

The horizontal movement of the air is called ___________.

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

  1. Air current

  2. Wind

  3. Tides

  4. Cyclone

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Correct Option: B
Explanation:
  • The horizontal movement of air is called wind, hence option B is correct.
  • Air current involves both horizontal and vertical movement of air thus incorrect.
  • Cyclone is a circular movement of air.
  • Tides are the rise and fall of the sea level due to gravitational pull of moon and sun.

In which of the following the wind velocity is the highest?

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

  1. Thunderstorm

  2. Hurricane

  3. Typhoon

  4. Tornado

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Correct Option: D
Explanation:
  • Among the given options tornado has the highest wind velocity and the thunderstorm has the lowest wind velocity
  • Hence tornado is the right answer.

The moist air cause winter rains in the north-western region of India are part of _______.

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

  1. Trade winds

  2. Westerlies

  3. Local disturbances

  4. Retreating monsoons

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Correct Option: B
Explanation:

Westerlies,

Western disturbances, specifically the ones in winter, bring moderate to heavy rain in low-lying areas and heavy snow to mountainous areas of the Indian Subcontinent. They are the cause of most winter and pre-monsoon season rainfall across northwest India.

What is meant by planetary winds?

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

  1. Winds occurring on the planet throughout the year

  2. Winds occurring on the planet in seasons

  3. Winds occurring due to local variation in temperature and pressure

  4. These are the winds which blow extensively over continents and oceans
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Correct Option: D
Explanation:

These are the winds that blow extensively over continents and oceans.

Planetary Wind - Any wind system of the earth's atmosphere which owes its existence and direction to solar radiation and to the rotation of the earth.

Planetary winds play a crucial role of transporting _____ across the world.

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

  1. Heat

  2. Moisture

  3. Both A & B

  4. None of these

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Correct Option: C
Explanation:

Heat and Moisture,


The winds blow through­out the year from one latitude to another in response to latitudinal differences in air pressure. They involve large areas of the globe.

Winds are classified into _____ types.

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

  1. Two

  2. Three

  3. Four

  4. Five

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Correct Option: B
Explanation:

Winds are classified into three types:

(i) Planetary winds: The winds that blow from high-pressure belts to low-pressure belts are planetary winds. There are two type of planetary wind the trade wind and the westerly winds.
(ii) Periodic Winds: Sometimes winds changes their direction with the change of season or time. Such type of wind is called periodic wind. Monsoon, Land and sea breezes etc are the periodic winds.
(iii) Local Winds: There are some winds which affect small areas and restricted to the lower level of the troposphere. These winds are developed mainly as a result of the local difference in temperature and pressure. Foehn, Chinook, Samun etc are some famous local winds.

Planetary winds are of three types including ______.

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

  1. Trade winds

  2. Westerlies

  3. Polar winds

  4. All of these

Show answer
Correct Option: D
Explanation:
1. Planetary Winds:
The winds blowing through­out the year from one latitude to another in response to latitudinal differences in air pressure are called “planetary or prevailing winds”. They involve large areas of the globe.

2. Trade Winds:
These are extremely steady winds blowing from subtropical high-pressure areas (30°N and S) towards the equatorial low-pressure belt. These winds should have blown from the north to south in Northern Hemisphere and south to north in Southern Hemisphere, but, they get deflected to the right in Northern Hemisphere and to the left in Southern Hemisphere due to Coriolis effect and Ferrel’s law. Thus, they blow as northeastern trades in Northern Hemisphere and southeastern trades in Southern Hemisphere.

They are also known as tropical easterlies, and they blow steadily in the same direction. They are noted for consistency in both force and direction.

3. The Westerlies:
These winds blow from subtropical high-pressure belts towards sub-polar low-pressure belts. The westerlies of Southern Hemi­sphere are stronger and constant in direction than Northern Hemisphere. These winds develop be­tween 40° and 65°S latitudes and these latitudes are known as Roaring Forties, Furious Fifties, and Shriek­ing Sixties.


Periodic Winds:
Periodic winds change their direction periodically with the change in season, e.g., Monsoons, Land and Sea Breezes, Mountain and Valley Breezes.

a. Monsoon Winds:

These winds are seasonal winds and refer to wind systems that have a pronounced, seasonal reversal of direction. According to ‘Flohn’, monsoon is a seasonal modification of general Planetary Wind System.