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 properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Which of the following doesn't show that air exerts pressure?

  1. Riding a bicycle against wind

  2. Flying a kite

  3. Ball falling to the ground

  4. Drinking a soft drink through a straw
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A ball falling down to the ground is due to gravity and not due to air pressure. Hence, it doesn't show that air exerts pressure.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

The humidity of a place:

  1. lies between 10% -20%

  2. is always more than 50%

  3. is always less than 80%

  4. varies from time to time
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The humidity of a place varies from time to time as it also depends on the place we reside in. Coastal areas have more humidity or is more humid due to the pressure of the sea breeze.

Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

Shrinkage of concrete depends upon the: 

  1. relative humidity of the atmosphere & passage of time

  2. the moisture in the surrounding

  3. applied stress

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

 Drying shrinkage is defined as the contracting of a hardened concrete mixture due to the loss of capillary water. This shrinkage causes an increase in tensile stress, which may lead to cracking, internal warping, and external deflection before the concrete is subjected to any kind of loading.

Shrinkage depends upon the relative humidity of the atmosphere & passage of time.
Hence, the correct option is A.

Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

The humidity of a place

  1. lies between 10% - 20%

  2. is always more than 20%

  3. is always less than 80%

  4. varies from time to time
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Humidity is amount of water vapour present in air.It varies from place to place due variation in temperature and climate conditions.The ideal humidity for health and comfort is about $40-50$%.

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

State, which of the following variables are continuous and which are discrete :


Daily temperature of a city is continuous
If true then enter $1$ and if false then enter $0$

  1. Can't determine
  2. $0$
  3. $1$

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Temperature of a city can have any value including integers and rational numbers. Hence, it is a continuous variable.

Multiple choice botany environmental factors environmental factors and their measurements climate factors marine life

The following evidences rejected with atmospheric pressure theory. Which of them is incorrect ?

  1. It can raise water to height of 33 feet only if complete vaccum is created.

  2. Free surface of water is required for proper operation of atmospheric pressure because of transpiration.

  3. Pressure falls below that of atmospheric pressure because of transpiration.

  4. Water rises rapidly to compensate the water loss because of atmospheric pressure.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The question is poorly phrased, but option B is the most scientifically inaccurate statement regarding atmospheric pressure and transpiration in plants.

Multiple choice physics the kinetic model of matter evaporation heat, internal energy and work phase change

Rate of evaporation increases 

  1. with the rise in temperature

  2. with the fall in temperature

  3. irrespective of temperature

  4. only beyond room temperature
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rate of evaporation Increases with the rise in temperature as increasing temperature increases the kinetic energy of molecules of the liquid which facilitates the molecule to convert into vapour.

Multiple choice physics the kinetic model of matter evaporation heat, internal energy and work phase change

Water evaporates under atmospheric pressure. Without changing the temperature, the same water is placed under partial vacuum. The rate of evaporation _________.

  1. increases

  2. drop to zero

  3. decreases

  4. remain unaffected
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
In partial pressure, the pressure is less;
According to Le-chatlier's principle on decreasing pressure; volume increases, so more water into gas(vapour)
So, rate of evaporation increases.
Multiple choice physics the kinetic model of matter evaporation heat, internal energy and work phase change

From the following which are the factors affecting the rate of evaporation?

  1. Temperature

  2. Humidity

  3. Exposed Surface Area

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

1. Temperature - If we increase the temperature of a liquid, its molecules get more kinetic energy and more molecules will come out rapidly from the surface of liquid i.e. rate of evaporation increases.


2. Humidity - Humidity is measurement of amount of vapour present in air. If humidity is high, it will be difficult for liquid to add more vapour in air as there is already high amount of vapour, therefore with increase in humidity, rate of evaporation decreases and vice- versa.


3. Exposed surface area - If exposed surface area is increased, more liquid molecules come on the surface, as evaporation is a surface process, therefore rate of evaporation increases.

Hence, all these factors affect the rate of evaporation.
Multiple choice physics the kinetic model of matter evaporation heat, internal energy and work phase change

State True or False :
Evaporation takes place at all temperatures.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

True, Evaporation takes place at any temperature. When the air molecule strike the surface, they are going to impart some energy to water molecules. If this energy is sufficient enough to change the phase of water molecules; we experience a phenomenon evaporation. It can occur at any temperature.