Tag: atmosphere and its components

Questions Related to atmosphere and its components

The sea breeze is caused due to the low pressure generated over

  1. Land

  2. Sea

  3. Air

  4. Both A and B


Correct Option: B
Explanation:

During, the daytime when the air above the land gets heated up, the air molecules absorbs the heat and the intermolecular forces between the air molecules become weak and its kinetic energy increases. The air molecules move apart and become less dense and they become lighter and rises up. This creates a low-pressure zone on land and thus cold air from the sea rushes from sea to land and thus creates sea breeze.

So, the correct answer is option B.

Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably:

  1. Decrease as the air becomes drier

  2. Decrease as the air becomes moister

  3. Increase as the air becomes drier

  4. Increase as the air becomes moister


Correct Option: A

Where are the days and nights of equal length all year long?

  1. At $66.5^{o}$

  2. Nowhere

  3. At $23.5^{o}$

  4. At the Equator


Correct Option: D

Typically, water vapor occupies about what percentage of the air's volume near the earth's surface?

  1. About 78 percent

  2. About 21 percent

  3. Close to 10 percent

  4. Less than 4 percent


Correct Option: D

At which latitude heat gain through insolation approximately equals heat loss through terrestrial radiation:

  1. $22.5^0$ North and South

  2. $40^0$ North and South

  3. $42.5^0$ North and South

  4. $66^0$ North and South


Correct Option: D

Land and water dwelling plants, may suffer from

  1. Ultraviolet radiations

  2. Pollutions

  3. Air pollution

  4. Pollutants


Correct Option: A

If climate change keeps on disrupting atmospheric pressure, it would bring ice age in

  1. America

  2. Northern Europe

  3. Africa

  4. Canada


Correct Option: B

Which of the following statements is not correct?

  1. The length of human hair changes as the relative humidity changes.

  2. During the winter, low relative humidity can irritate the mucus membranes in the nose and throat.

  3. The relative humidity is a measure of the air's actual water vapor content.

  4. A change in the air temperature can change the relative humidity.


Correct Option: C

If the air temperature increased, with no addition or removal of water vapor, the actual vapor pressure would:

  1. Increase

  2. Decrease

  3. Stay the same

  4. Become greater than the saturation vapor pressure


Correct Option: C