Tag: pressure belts

Questions Related to pressure belts

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

Show answer
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

Show answer
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.

The local winds blow in the lower level of the _____.

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

  1. Stratosphere

  2. Mesosphere

  3. Thermosphere

  4. Troposphere

Show answer
Correct Option: D
Explanation:

Troposphere,

Local winds occur on a small spatial scale, their horizontal dimensions typically several tens to a few hundreds of kilometres. They also tend to be short-lived lasting typically several hours to a day. There are many such winds around the world, some of them are cold, some warm, some wet, some dry. There are many hazards associated with the winds.

The main types of local winds are:
Sea breezes and land breezes, Anabatic and katabatic winds, and Foehn winds.

What is the name of cold local winds that blow from the Alps?

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

  1. Chinook

  2. Loo

  3. Mistral

  4. Puna

Show answer
Correct Option: C
Explanation:

Mistral

The mistral is a strong, cold, northwesterly wind that blows from southern France into the Gulf of Lion in the northern Mediterranean. It produces sustained winds often exceeding 66 km/h (41 mph), sometimes reaching 185 km/h (115 mph). It is most common in the winter and spring, and strongest in the transition between the two seasons. Periods of the wind exceeding 30 km/h (19 mph) for more than sixty-five hours have been reported.

Loo is an example of _____.

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

  1. Hot and dry winds in Northern plains of India

  2. Cold local winds

  3. Trade winds

  4. None of these

Show answer
Correct Option: A
Explanation:
  • The Loo is a strong, hot and dry summer wind that blows over the western Indo-Gangetic Plain region of North India and Pakistan.
  • It is especially strong in the months of May and June.
  • This creates a vast low pressure area over North Indian plains during afternoon.

Which among the following is a cold local wind in the Andes region?

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

  1. Pampero

  2. Puna

  3. Chinook

  4. Loo

Show answer
Correct Option: A
Explanation:

Pampero 
The pampero is a burst of cold polar air from the west, southwest or south on the pampas in the south of Brazil, Argentina, Uruguay, Paraguay, and Bolivia. This wind (often violently) picks up during the passage of a cold front of an active low passing by. It takes the form of a squall line and there is a marked drop in temperature after its passing. The Pampero is most common in winter in the southern hemisphere (principally between May and August). During the summers in the region around Buenos Aires, the pampero storms are a welcome feature marking the end of long periods of high humidity and extreme heat.

Which cold local wind blows in Pampas region of South America?

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

  1. Mistral

  2. Chinook

  3. Pampero

  4. Loo

Show answer
Correct Option: C
Explanation:
Pampero
The name given to severe line squalls in Argentina and Uruguay, particularly in the Rio de la Plata area. They are associated with marked cold fronts and are usually accompanied by rain, thunder, and lightning, a sharp drop in temperature and a sudden change of wind direction from northerly or northwesterly to southerly or south-westerly. They are most likely to occur during the period of June to September.

The local winds blow due to local variation in the temperature and pressure and influence a _____.

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

  1. Large area

  2. Medium area

  3. Small area

  4. Very small area

Show answer
Correct Option: D
Explanation:

Very small area,

The local winds moderates the climate of nearby areas with sudden increase or decrease in the temperature and humidity. In valleys of the mountains, two kinds of winds are particularly active - anabatic winds and katabatic winds.  These winds are result of differential heating of the land and the sea.

The instrument used to measure wind direction is called _____________.

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

  1. anemometer

  2. wind vane

  3. thermometer

  4. hygrometer

Show answer
Correct Option: B
Explanation:

The instrument which used to measure wind direction is called wind vane. It is generally located at the highest point of a building. This is pointed at the direction in which the wind is blowing. Wind vane is used to predict the weather of a particular place, as the direction of wind plays important role in determining weather of a place.