Physics · Geography

Atmospheric Physics and Humidity

878 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

Consider the following statements:

  1. At night, sea water cools down more slowly than land and cool air from the land moves towards the sea. This is called the night breeze.
  2. If two identical spheres of the same radius R, out of which one is hollow containing air and the other is solid are heated at the same temparature, the change in dimensions of the spheres will be same in both the spheres.

Which of the given statements is/are correct?

  1. Only (1)

  2. Only (2)

  3. Both (1) and (2)

  4. Neither (1) nor (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement (1) is incorrect. At night the sea water cools down more slowly than the land and the cool air from the land moves towards the sea. This is called the land breeze, not night breeze. Statement (2) is incorrect. Air being a bad conductor of heat compared to the metallic sphere which is a good conductor, the maximum heat is utilized in expanding the metallic part. In case of solid, the change in radius will be greater due to the metallic substance present in it.

Multiple choice

Consider the following statements:

  1. At high altitudes, nose bleeding occurs because the pressure of air inside our body is more as compared to atmospheric pressure.
  2. Naphthalene balls disappear with time without leaving any solid due to sublimation.

Which of the given statements is/are correct?

  1. Only (1)

  2. Only (2)

  3. Both (1) and (2)

  4. Neither (1) nor (2)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement (1) is correct. At higher altitudes, nose bleeding occurs because at higher altitudes, the atmospheric pressure decreases as a result the blood vessels of nose burst and cause bleeding. Statement (2) is correct. Sublimation is the process of conversion of solid directly into gaseous state. Therefore, Naphthalene balls disappear with time without leaving any solid.

Multiple choice

Which of the following statements is correct?

  1. Higher the altitude, higher is the pressure, more the depth, lesser is the pressure.

  2. Higher the altitude, lesser is the pressure, more the depth, more is the pressure.

  3. Higher the altitude, lesser is the pressure, more the depth, lesser is the pressure.

  4. Higher the altitude, lesser is the pressure, lesser the depth, lesser is the pressure.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Higher the altitude, lesser is the pressure, more the depth, more is the pressure. 

Multiple choice

Tube of a bicycle gets inflated when the air is filled in it. Why does this happen?

  1. Air is light

  2. Air flows anywhere

  3. Air exerts pressure

  4. Air expands on heating

  5. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tube of a bicycle gets inflated when the air is filled with it. This happens because air exerts pressure. Air exerts pressure because it is a matter and occupies space and has mass. Since, air is a mixture of different molecules they are pushed together causing pressure with each other.

Multiple choice

A thatched roof is blown off because of high speed wind. Which of the following reason correctly explains it?

  1. This happens because high speed wind creates an area of low pressure.

  2. This happens because high speed wind creates high pressure.

  3. This happens because high speed wind makes the thatched roof light in weight.

  4. This happens because high speed wind creates low temperature.

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This happens because high speed wind creates an area of low pressure. Due to this, the thatched roof is sucked up and finally gets blown away. Thus, increase in wind speed is associated by decrease in air pressure.

Multiple choice

Which of the following statements is/are incorrect?

a. Air is a bad conductor of heat. b. Atmosphere keeps the average temperature of Earth steady. c. Sand and water heat up at the same rate.

  1. a only

  2. b only

  3. c only

  4. a and b

  5. b and c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer choice as this statement is incorrect. Sand and water do not heat up at the same rate. Sand heats up faster than water as the specific heat of sand is lower than the specific heat of water.

Multiple choice

Match the following.

 
1. Tiny drops of water A. Water rising to the sky
2. Evaporation B. Boiling point of water
3. 0 degree Celsius C. Cloud
4. 100 degree Celsius D. Freezing point of water

  1. 1 - A, 2 - B, 3 - D, 4 - C

  2. 1 - C, 2 - A , 3 - D, 4 - B

  3. 1 - D, 2 - B, 3 - C, 4 - A

  4. 1 - B, 2 - C, 3 - D, 4 - A

  5. 1 - A, 2 - B, 3 - C, 4 - D
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is a right option, here all are correctly matched. The tiny drops of water are the clouds, evaporation is the water rising to the sky, 0 degree Celsius is the freezing point of water and 100 degree celsius is the boiling point of water.

Multiple choice

Air exerts pressure in

  1. upward direction

  2. downward direction

  3. all directions

  4. north and south direction

  5. east and west direction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Air exerts pressure in all the directions.

Multiple choice

The humidity of a place

  1. lies between 10 - 20%

  2. is always more than 50%

  3. is always less than 1%

  4. is always about 80%

  5. always varies from time to time
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Humidity of a place is due to water vapours present in the atmosphere, which always vary from time to time.