Tag: example of some natural phenomena

Questions Related to example of some natural phenomena

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

Show answer
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

Show answer
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

Show answer
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.

During day time air blows-

physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

  1. from the land to the sea

  2. from the sea to the land

  3. from one sea to another

  4. none of these

Show answer
Correct Option: B
Explanation:
During day time air blows $\rightarrow$ from sea to land, because in day time the land is warmer than sea.
Therefore air pressure of land is lower than sea.
As a result air blows from sea to land.

State True and False :
During the day, land gets heated faster than water.

physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
During day, land gets heated faster than water as the heat capacity of land is lower than the heat capacity of water. Air above the land gets warmer and rises up. The cold air above sea moves towards land to takes its place.

During night time cool breeze blows from_to __

physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

  1. land, sea

  2. sea,land

  3. mountain,land

  4. land,mountain

Show answer
Correct Option: A
Explanation:
During night time cool breeze blows from land to sea.
As we know, water is good absorber of heat, it takes more time to heat up and cool down water than that of land. And during night, land cools down quickly than that of water causing high pressure over land and hot air above water causes low pressure over water. As we know wind blow from higher pressure to lower pressure, so during night cool breeze blows from land to sea.
State True or False :
Convection currents are set up giving rise to sea breezes. 
physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Yes, it is true; convection current are set up giving rise to sea breezes.

Convectional currents are the result of differential heating. Less dense(lighter) warm materials rise while heavier(more dense) cool materials sink. It is the movement that creates circulation pattern known as convectional current in atmosphere, water and mantle of earth.

State whether given statement is True or False
During the night, land cools faster than sea.

physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

It is true that during night; land cools faster than sea.

As we know; water is good absorber of heat, it takes more time to heat up and cool down too. So during night; land cools faster than water.

Which of the following constitutes a wind energy 

physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

  1. Sea breeze

  2. Land Breeze

  3. Both A and B

  4. none of these

Show answer
Correct Option: C
Explanation:

See breeze and land breeze together constitute the wind energy.