Tag: the concept of bernoulli's principle

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Questions Related to the concept of bernoulli's principle

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

Sea breeze and land breeze

  1. are caused by currents set up in air due to conduction

  2. are caused by currents set up in air due to convection

  3. are caused by currents set up in air due to radiation

  4. have no relation to conduction, convection and radiation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sea breezes and land breezes occur due to differential heating and cooling of land and water, which sets up convection currents in the atmosphere. Warm air rises and cooler air moves in to replace it, driven entirely by the process of convection.

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 true or false.
The land and sea breezes are based on the fact that the specific heat of vaporisation of steam is very high.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The statement is true.
The specific heat capacity of water is much higher than that of sand. Air above land becomes more warmer than water during day. So cold air above water or sea blows to land known as sea breeze and vice versa for land breeze.
Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

As one goes up from earth's surface, the temperature of air:

  1. increases

  2. decreases

  3. first increases and then decreases

  4. first decreases and then increases
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the atmosphere, temperature decreases with altitude in the troposphere, but then increases in the stratosphere due to ozone absorption of UV radiation.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Fog can be defined as:

  1. Smoke from cigarette

  2. Polluted air from vehicles

  3. Clouds forming close to the ground

  4. A combination of smoke and dust particles
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fog is a thick cloud of tiny water droplets suspended in the atmosphere at or near the earth's surface which obscures or restricts visibility.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Which of the following statements is true regarding the properties of air?

  1. It is a good conductor of electricity

  2. It is a good conductor of heat

  3. It is translucent in nature

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Air is a good conductor of heat.

It is a good conductor of electricity.
It is translucent in nature.
Hence, option $(D)$ is the answer.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Which of the following can show the direction of wind ?

  1. Anemometer

  2. Wind wane

  3. Wind mill

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

Anemometer: Used to measure the speed of the wind.


Wind wane: Used to show the direction of wind.


Windmill: Converts wind energy to rotational energy.

Barometer: Used to measure atmospheric pressure. 


Hence, option B is correct.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Which of the following is not true about air?

  1. air can be separated into components

  2. it can be liquefied
  3. liquid nitrogen has a b.p of $-196^\circ C$

  4. air has a chemical formula
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The statement which is not true about air is that it has a chemical formula. Air has no chemical formula. It is a mixture of gases.