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

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.

Multiple choice

Consider the following statements: (i) Compressed air coming out from a punctured ball becomes hotter. (ii) A sudden fall in the reading of a barometer indicates the sign of coming storm.

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
B Correct answer
Explanation

Statement 1 is incorrect. Compressed air coming out from a punctured ball becomes cooler as every expanding gas produces cooling effect. Statement 2 is correct. Barometer is a scientific instrument used to measure the atmospheric pressure. From a sudden fall in mercury of a barometer, a thunderstorm may be expected.

Multiple choice

Consider the following statements:

  1. Mountain roads rarely go straight up the slope but wind up gradually.
  2. An inflated balloon will rise to a definite height in atmosphere and then it will come to rest.

  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

Solution 1 is correct. When a road goes straight up, the slope is large and hence the frictional force is small. Now due to insufficient friction, the wheels slip on the road. Moreover for a large slope, more power will have to be used. Solution 2 is also correct. An inflated balloon will rise to a definite height in atmosphere and then it will come to rest. It will come at rest when the atmospheric pressure is equal to the air pressure inside the balloon.

Multiple choice

Directions: In following question, four statements are provided. These statements form a coherent paragraph when properly arranged. Select the alternative representing the proper and logical sequencing of these statements.

A. The pressure falls low at the centre. B. In a hurricane there are severing. C. The low pressure centre is called the 'eye'. D. The winds blow round at high speeds.

  1. BDAC

  2. BDCA

  3. ADCB

  4. ABCD
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In this question, the two statements which have to came together are AC. (A) talks about low pressure i.e. (A) introduces the word low pressure & (C) gives the term 'eye' for this low pressure. So, (A) and (C) have to be together which is only in option (1). Also, on reading all choices, only (A) is the most logical sequence. In this question, B & D statements talk about 'layers'. B introduces the 'layers' & D later talks about temp. of layers. So, BD is the key which is only in option (A). Also, statement A introduces 'hot gases' and C later speaks about the form of gases. So, AC is also the key. Hence, the only relevant choice is (1).

Multiple choice

Why is air considerd a transparent object?

  1. As it possesses a mixture of gases

  2. As light passes very easily through it

  3. As it is lighter than water

  4. As it contains microorganisms
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transparent objects are the ones through which light can easily pass, e.g. water, air, etc.