Physics · Geography

Atmospheric Physics and Humidity

935 Questions

Study the principles of atmospheric physics and humidity through these practice questions. Key subjects include the rate of evaporation, temperature inversions, and relative humidity measurements. These concepts are vital for geography and physics exams.

Evaporation and condensationRelative humidity conceptsAtmospheric pressure effectsTemperature inversion

Atmospheric Physics and Humidity Questions

Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature solar energy and its applications

The water vapour which enters into air to form clouds in the sky are obtained by which of the following process?

  1. Condensation

  2. Evaporation

  3. Precipitation

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.
  • By the process of evaporation, the water vapour enters into the air to form clouds in the sky. 
  • The water vapour in the air condenses to form tiny water droplets which are the basis of clouds.
  • Hence the process by which water vapour enters into the air to form clouds in the sky is Evaporation.
  • So, the correct answer is 'Evaporation'.
Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature solar energy and its applications

When the air temperature is below freezing, the saturation vapor pressure over water is.

  1. Equal to zero

  2. Less than the saturation vapor pressure over ice

  3. Greater than the saturation vapor pressure over ice

  4. Equal to the saturation vapor pressure over ice
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

At temperatures below freezing, ice crystals have a lower saturation vapor pressure than supercooled water droplets. This difference is the basis for the Bergeron process in cloud physics.

Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature solar energy and its applications

What dissolved gases in atmosphere during water falling?

  1. Evapo-transpiration

  2. Condensation

  3. Precipitation

  4. Transpiration
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Precipitation (such as rain) acts as a scavenger in the atmosphere. As raindrops fall, they dissolve gases like carbon dioxide and other atmospheric pollutants, bringing them down to the Earth's surface.

Multiple choice biology water a precious resource water cycle earth's energy budget bio-geo chemical cycles in nature solar energy and its applications

The total mass of water vapor stored in the atmosphere at any moment is about ____________ of the world's supply of precipitation.

  1. 1 day

  2. 1 week

  3. 1 month

  4. 1 year
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The residence time of water vapor in the atmosphere is relatively short, typically estimated to be about 8 to 10 days, which is approximately one week.

Multiple choice commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

The ratio of the mass of water vapor in a given volume (parcel) of air to the mass of the remaining dry air describes the:

  1. Absolute humidity

  2. Mixing ratio

  3. Relative humidity

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

The mixing ratio is defined as the mass of water vapor divided by the mass of the remaining dry air in a given parcel.

Multiple choice commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

The temperature at which water boils depends mainly on:

  1. Air temperature

  2. Relative humidity

  3. Air pressure

  4. Air density
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The boiling point of water is the temperature at which its vapor pressure equals the surrounding atmospheric pressure. Therefore, lower air pressure decreases the boiling point.

Multiple choice commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

The wind flows from 

  1. High pressure to low pressure

  2. Low pressure to high pressure

  3. Low temperature to high-temperature

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The uneven heating of the air causes the flow of the wind. It takes place due to the greater intensity of sunlight at the equator as compared to that of poles. Due to greater intensity of sunlight at the equator the air gets heated up, the air molecules absorb the heat and the intermolecular forces between the air molecules become weak and its kinetic energy increases. The air molecules becomes lighter and rises up. This creates a low pressure zone on the equator while high pressure zone exist at the poles. So, the air moves from high pressure to the low pressure.

So, the correct answer is option A.