Tag: the concept of bernoulli's principle

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Questions Related to the concept of bernoulli's principle

Multiple choice geography in search of the source of wind variations in atmospheric pressure properties of air pressure belts the concept of bernoulli's principle air exerts pressure

The atmospheric pressure decreases at the rate of ______________.

  1. 1 millibar/altitude of 10 meters

  2. 1 millibar/altitude of 15 meters

  3. 1 millibar/altitude of 18 meters

  4. 1 millibar/altitude of 20 meters
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Near Earth's surface the pressure decreases with height at a rate of about 1 millibars for every 10 metres. However, over cold air the decrease in pressure can be much steeper because its density is greater than warmer air.

Multiple choice geography in search of the source of wind variations in atmospheric pressure properties of air pressure belts the concept of bernoulli's principle air exerts pressure

When the temperature increases atmospheric pressure _________.

  1. increases

  2. decreases

  3. remains same

  4. became zero
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There exists a negative relation between pressure and temperature. When temperature increases pressure will fall and vice versa. That is why, pressure increases from equatorial region towards the polar region.

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

During day time air blows-

  1. from the land to the sea

  2. from the sea to the land

  3. from one sea to another

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
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.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

During night time cool breeze blows from_to __

  1. land, sea

  2. sea,land

  3. mountain,land

  4. land,mountain
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle
State True or False :
Convection currents are set up giving rise to sea breezes. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

How are monsoon winds formed?

  1. The air over the land gets heated and rises. This causes the winds to flow from the oceans towards the land, which gives rise to Monsoon winds.

  2. The pressure difference in adjoining areas gives rise to air movement which leads to formation of Monsoon winds

  3. Air that is warmed up near the Equator, moves towards each pole causing the Monsoon winds to blow.

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The air over the land gets heated and rises. This causes the winds to flow from the oceans towards the land. These are monsoon wind.