Tag: geography

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Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Atmospheric pressure in the center of a tropical cyclone is :

  1. Very low because of dense sinking air

  2. Very low because of rising warm air

  3. Very high because of sinking warm air

  4. Very high because of converging winds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tropical cyclone: it is a rapidly rotating storm with a low pressure centre, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain. The low pressure is due to rising warm air.

Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Monsoon is an example of ______.

  1. Planetary winds

  2. Trade winds

  3. Seasonal winds

  4. Local winds
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Monsoon is an example of seasonal wind. It is a seasonal modification of general planetary wind system. In summer, there is warm moist wind blowing from ocean towards land, while during the winter months a cold and dry wind originating on the land blows seaward. Monsoon winds are most powerful in India and China. In summer monsoon winds are known as south west monsoon, it is moist and brings a lot of rain. In winter it is known as north-east monsoon. As it comes from interior it is cold and dry. 

Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Polar region experiences the ______.

  1. Easterlies

  2. Westerlies

  3. Northerlies

  4. Southernlies
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • The polar easterlies (also Polar Hadley cells) are the dry, cold prevailing winds that blow from the high-pressure areas of the polar highs at the North and South Poles towards low-pressure areas within the Westerlies at high latitudes.
  • When air moves near the poles, cold temperatures shrink the air.
  • Cold air subsides at the pole creating the high pressure, forcing a southerly (northward in the southern hemisphere) outflow of air towards the equator.
  • This outflow is then deflected westward by the Coriolis effect, therefore these prevailing winds blow from the east to the west.
  • Since the winds originate in the east, they are then known as easterlies.
  • Unlike the westerlies in the middle latitudes, the polar easterlies are often weak and irregular.

Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Storms in the Pacific ocean are known as ______.

  1. Hurricanes

  2. The Typhoon

  3. Cyclones

  4. Willie-Willie
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Typhoon,

In the Atlantic and northern Pacific, the storms are called "hurricanes," after the Caribbean god of evil, named Hurrican. In the northwestern Pacific, the same powerful storms are called "typhoons." In the northern Indian Ocean, they're called "severe cyclonic storms."

Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Which winds blow North East in Northern Hemisphere?

  1. Westerlies

  2. Trade winds

  3. Polar winds

  4. Seasonal winds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Trade Winds:
These are extremely steady winds blowing from sub-tropical 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 north eastern trades in Northern Hemisphere and south eastern 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.
Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Trade winds are ______ in direction.

  1. Easterly

  2. Westernly

  3. Northernly

  4. Southernly
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Easterly,

Trade Winds:
These are extremely steady winds blowing from sub-tropical 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 north eastern trades in Northern Hemisphere and south eastern 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.

Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Westerlies blow South West in ______.

  1. Northern Hemisphere

  2. Southern Hemisphere

  3. Eastern Hemisphere

  4. Western Hemisphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Northern Hemisphere,

The Westerlies:
These winds blow from subtropical high-pressure belts towards sub-polar low-pressure belts. They blow from the southwest direction in the northern hemisphere and from the southeast direction in the southern hemisphere. 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.

Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Westerlies, a type of planetary winds, blow from _____.

  1. East to West

  2. West to East

  3. South to East

  4. North to East
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

West- East

These winds blow from sub tropical high pressure belts towards sub-polar low pressure belts. The westerlies of Southern Hemi­sphere are more 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.

Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

Which of the following is the name of very violent and serious type of winds which bring a lot of disaster?

  1. Trade winds

  2. Hurricane

  3. Cirrus

  4. Stratus

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Hurricane
A tropical cyclone is a rotating low-pressure weather system that has organized thunderstorms but no fronts (a boundary separating two air masses of different densities). Tropical cyclones with maximum sustained surface winds of less than 39 miles per hour (mph) are called tropical depressions. Those with maximum sustained winds of 39 mph or higher are called tropical storms.

When a storm's maximum sustained winds reach 74 mph, it is called a hurricane. The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating, or category, based on a hurricane's maximum sustained winds. The higher the category, the greater the hurricane's potential for property damage.

Hurricanes originate in the Atlantic basin, which includes the Atlantic Ocean, Caribbean Sea, and Gulf of Mexico, the eastern North Pacific Ocean, and, less frequently, the central North Pacific Ocean. A six-year rotating list of names, updated and maintained by the World Meteorological Organization, is used to identify these storms.

"Hurricane Season" begins on June 1 and ends on November 30, although hurricanes can, and have, occurred outside of this time frame. NOAA's National Hurricane Center predicts and tracks these massive storm systems, which occur, on average, 12 times a year in the Atlantic basin.

As a world leader in hurricane research, NOAA strives to understand the mechanics of these complex storms in order to protect people, property, commerce, and natural resources.
Multiple choice geography in search of the source of wind atmospheric pressure, pressure belts and winds elements of weather and climate :wind monsoon phenomena and its mechanism

consider the following statements-
1.Education has a major role in moulding skills ofthe people.
2.Education improves the skills of individuals only.

Which of the above statements are correct?

  1. 1 only

  2. 2 only

  3. both 1 and 2

  4. neither 1 nor 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Education has a major role in moulding the skill of the people. It not only improves the skills of individuals but also betters the technological know how, helps to secure better job and income and improves the standard of living.