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 general knowledge science & technology

What common term refers to the movement of air from a high pressure to a low pressure zone

  1. Wave

  2. Air

  3. Wind

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

Wind is the common term for air movement from high pressure to low pressure areas. This pressure difference creates air flow, which we experience as wind. Wave, air, and sound are not the correct terms for this horizontal movement of air caused by pressure gradients.

Multiple choice general knowledge science & technology

Produce SWEAT

  1. 1.40 pints

  2. 1.43 pints

  3. 1.45 pints

  4. 1.49 pints
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct answer is B (1.43 pints), representing daily sweat production. Normal sweat production varies widely with activity and climate; baseline insensible perspiration is about 0.5-1 liter daily. 1.43 pints ≈ 0.68 liters, which is a reasonable baseline value. Options A (1.40), C (1.45), and D (1.49) are very close, making this a precise numerical distinction.

Multiple choice general knowledge science & technology

The property of a substance to absorb moisture from the air on exposure is called

  1. osmosis

  2. deliquescence

  3. efflorescence

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

Deliquescence occurs when a hygroscopic substance absorbs moisture from air and dissolves in it (e.g., sodium hydroxide pellets). Efflorescence is the opposite - losing water to become powdery. Osmosis involves solvent movement through membranes. Desiccation actively removes moisture.

Multiple choice technology storage

CFD refresh happens

  1. Daily

  2. Weekly

  3. Monthly

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

CFD refreshes on a daily schedule, which is the standard update frequency indicated for this data source. Weekly and monthly would be too infrequent for operational web systems. The correct option is explicitly marked as daily refresh.

Multiple choice

Which of the following statements is/are false?

a. At sea level, air exerts a pressure of 10.33 kg/cm3. b. Monsoon is the system of winds that move from the sea towards the land in the latitudes of 5 degree to 30 degree. c. Increased wing speed is accompanied by reduced air pressure.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option as this statement is false. At sea level, air exerts a pressure of 1.033 kg/cm3.

Multiple choice

Which of the following is an example to prove that hot air rises upwards and cold air sinks down?

  1. The rising up of smoke when someone burns a heap of dry leaves

  2. The blowing off of the roofs in high-speed winds

  3. The taking off of a moving aeroplane on a runway

  4. The fluttering of flags in moving air

  5. The falling off of leaves in strong winds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option. The rising up of smoke when someone burns a heap of dry leaves is an example to prove that hot air rises upwards and cold air sinks down.

Multiple choice

When we blow air in a balloon, it increases in size. It happens because __________.

  1. air is invisible

  2. air occupies volume and space

  3. air has no weight

  4. air has no mass

  5. air contains water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Air, like any other gas, has volume. When you blow air into a balloon, the air takes the shape of the balloon. If more air is blown in, the balloon becomes larger as the volume of the air is increased. If some of the air is released, the balloon becomes smaller as the volume of the air is decreased. Air also creates its own space when filled in the things like balloon.

Multiple choice

Which of the following statements is/are incorrect?

a. The ability of the air to hold water vapour depends entirely on its temperature. b. The temperature at which the water starts evaporating is referred to as the latent heat of vapourisation. c. Movement of air decreases the rate of evaporation.

  1. Only a and b

  2. Only a and c

  3. Only a

  4. Only b

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Movement of air replaces the saturated layer with the unsaturated layer. Hence, the greater the movement of air, the greater is the evaporation. Thus, statement c is incorrect. This is the correct answer choice.

Multiple choice

Which of the following statements is/are incorrect about the dew point?

a. The temperature at which saturation occurs in a given sample of air is known as dew point. b. Dew point occurs when the moist air comes in contact with some colder object. c. Dew pointis a type of vaporisation of a liquid.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and b

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

This is incorrect. Evaporation is a type of vaporisation of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance. The temperature at which saturation occurs in a given sample of air is known as dew point. Thus, dew point is not a type of vaporization of a liquid.

Multiple choice

Which of the following statements is/are incorrect?

a. The relative humidity differs from place to place on the surface of the earth. b. The percentage of moisture present in the atmosphere as compared to its full capacity at a given temperature is known as the relative humidity. c. Relative humidity is affected by the change in the temperature.

  1. Only a

  2. Only b

  3. Only c

  4. All of these

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

This is the correct answer, as statement 'a' is incorrect. The absolute humidity differs from place to place on the surface of the earth. The percentage of moisture present in the atmosphere as compared to its full capacity at a given temperature is known as the relative humidity.

Multiple choice

Which of the following does not cause condensation?

  1. When there is a loss of heat in the air at a given place.

  2. When there is cooling around the hygroscopic condensation nuclei.

  3. When the moist air comes in contact with some colder object.

  4. When the temperature is close to the dew point.

  5. When air at the given temperature is incapable of holding any additional amount of moisture at that stage.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

No, saturation occurs at this point. Saturation occurs when air at the given temperature is incapable of holding any additional amount of moisture at that stage.