Tag: winds, storms and cyclones

Questions Related to winds, storms and cyclones

What happens when cold air meets warm air 

physics winds, storms and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure

  1. it forms front

  2. it creats a tomado

  3. it creates a mansoon

  4. none of these

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Correct Option: A

When a fluid is heated, it expands and becomes

physics winds, storms and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure wind and rain uneven heating of earth

  1. lighter

  2. heavier

  3. no change

  4. none of these

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Correct Option: A
Explanation:
As on heating the air expands and occupies more space. When the same thing occupies more space, it becomes lighter. The warm air is, therefore, lighter than the cold.

Iron, hydrogen peroxide and carbon dioxide. When same amount heat is supplied to these three substances, which expands most?

physics winds, storms and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure wind and rain uneven heating of earth

  1. Hydrogen peroxide

  2. Carbon dioxide

  3. Iron

  4. All of these

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Correct Option: B
Explanation:

Carbon dioxide being a gas expands the most. 

Which of the following will rise the highest?

physics winds, storms and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure wind and rain uneven heating of earth

  1. Air at 10$^o$C

  2. Air at 40$^o$C

  3. Air at 20$^o$C

  4. Air at -5$^o$C

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Correct Option: B
Explanation:

As the temperature of air rises, it becomes lighter and moves at a faster rate and thus it rises higher in the atmosphere.

Thus air at $40^oC$ will rise the highest in the atmosphere.

Convectional currents are set up, giving rise to :

physics winds, storms and cyclones wind and rain example of some natural phenomena uneven heating of earth

  1. Land breezes

  2. Land clean

  3. Sea water heated up

  4. None

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Correct Option: A
Explanation:

The warm air above the sea rises up and cool air above land blows towards the sea to take the place of warm air.

Sea breeze blows

physics winds, storms and cyclones wind and rain example of some natural phenomena uneven heating of earth

  1. During day

  2. During night

  3. Throughout day and night

  4. None of these

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Correct Option: A
Explanation:

Sea breeze, a local wind system characterized by a flow from sea to land during the day

Ocean thermal energy is due to 

physics winds, storms and cyclones wind and rain example of some natural phenomena uneven heating of earth

  1. temperature difference at different levels in the ocean

  2. tides in the ocean

  3. energy stored by the water waves

  4. pressure different at different levels in the ocean

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Correct Option: A
Explanation:

Different temperature at different levels of ocean.

The sun’s heat warms the surface water a lot more than the deep ocean water, which creates the ocean’s naturally available temperature gradient, or thermal energy.

Wind currents are generated due to:

physics winds, storms and cyclones wind and rain example of some natural phenomena uneven heating of earth

  1. Uneven heating between the equator and the poles

  2. Change in atmospheric pressure

  3. Thunderstorm

  4. Cyclone

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Correct Option: A
Explanation:

The correct answer is option(A).

We know poles are cooler than equator as highest intensity of the sun's heat and light falls on the equator and it reduces as we go either side of the equator towards the poles. Cooler air from the surrounding areass of the equator comes towards the equator to fill the place of warm air which rises up due to sun's heating. Hence, wind currents are generated due to uneven heating.