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 chemistry air, winds and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure variations in atmospheric pressure wind and rain uneven heating of earth

Which of the following principle shows that if you increase air speed its pressure will decrease?

  1. Darwin principle

  2. Einstein principle

  3. Bohr principle

  4. Bernoulli's principle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
According to Bernoulli's principle, Fast moving air equals low air pressure while slow moving air equals high air pressure.
 Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure. The same is applicable in case of gases also.
Multiple choice chemistry air, winds and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure variations in atmospheric pressure wind and rain uneven heating of earth

Increase in air speed is associated with ______________ .

  1. increasein air pressure

  2. decrease in air pressure

  3. increase in air temperature

  4. decrease in air temperature
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The increased wind speed is accompanied by a reduced air pressure.
Multiple choice chemistry air, winds and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure variations in atmospheric pressure wind and rain uneven heating of earth

Two pieces of papers are held parallel. Air is blown with a high speed in between them. Which of the following phenomena will be observed?

  1. The papers will move away from each other.

  2. The papers will move towards each other.

  3. The papers will stay at their position.

  4. The papers will catch fire due to increase in air temperature.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
It seems amazing that the two sheets of paper move closer together, the pressure is reduced where the air is moving quickly. This is called the Bernoulli principle. 
Multiple choice physics air, winds and cyclones the concept of bernoulli's principle air exerts pressure wind and pressure wind and rain uneven heating of earth

Why is warm air lighter than cold air?

  1. Due to heating, the pressure of air increases and air with higher pressure is lighter than air with lower pressure.

  2. Due to heating, the pressure of air decreases and air with lower pressure is lighter than air with higher pressure.

  3. Due to heating, air expands. When same mass occupies more volume it becomes lighter.

  4. Due to heating, air contracts. When same mass occupies less volume it becomes lighter.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Warm air lighter than cold air because on heating the air expands and occupies more space. When the same thing occupies more space, it becomes lighter.
Multiple choice geography the signature of time movement of the earth's plates development of landforms study of continents - north america biosphere and landscape

Increase in altitude results in _______________.

  1. Increase in the temperature

  2. Decrease in the temperature

  3. No change

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

Temperature decreases with an increase in altitude. The reason or this is:

The ground absorbs more radiation from the sun and during night time the ground emits this absorbed radiation to its surroundings. The molecules of air surrounding the land also absorb the emitted radiation from the ground. At locations near sea level where air is most dense the air is very warm at sunset and a few hours after sunset.

At higher altitudes, the air get very rarified i.e. less dense. The less-dense air can seldom absorb the heat emitted by the ground because they are very far apart. The net result is a drop in temperature at higher altitudes.

As a summary, the decrease in temperature is due to the very less heat energy absorbed by the air molecules and the very far distance of air molecules from each other.


Multiple choice geography climatic regions the climate and natural resources of gujarat introduction to weather and climate elements of weather and climate : temperature

As we go higher into the atmosphere, the air becomes _______

  1. Thinner

  2. Denser

  3. Warmer

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

As we go higher in the atmosphere, atmospheric pressure drops and the air goes on getting thinner. That's why mountain climbers sometimes need bottled oxygen to breathe. It becomes difficult to breath as the air is thinner.

Multiple choice business organisation and correspondence environmental pollution and industries pollution and industrial pollution pollution and its type pollutions

Most atmospheric pollutants do not rise above.

  1. $600$m
  2. $1000$m
  3. $2000$m
  4. $200$m
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Maximum atmospheric pollutants are concentrated at the 200m mark from the land surface.

The maximum height up to which the pollutants are prominent is 600m.
So, the correct option is '600m'.

Multiple choice water potential water potential and pressure plant water relation transport in plants biology

The water potential is?

  1. Equal in soil and atmosphere

  2. Lowest in soil and highest in atmosphere

  3. Highest in soil and lowest in atmosphere

  4. Non-existent at both the places
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Water potential is highest in pure water or wet soil (around 0 MPa or slightly negative) and decreases along the soil-plant-atmosphere continuum, reaching its lowest values in dry atmospheric air to drive transpiration.

Multiple choice biology physical resources air and winds wind energy air as a natural resource

What causes movement in air?

  1. Difference in temperature

  2. Difference in pressure

  3. Difference in volume

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Movements in the air are caused due to pressure and temperature gradient. The high temperature leads to the rising of air which creates a low-pressure region. The air from the surrounding high-pressure zone moves to low-pressure area to stabilise the pressure which creates a breeze
So, the correct answer is 'Both A and B'
Multiple choice biology physical resources air and winds wind energy air as a natural resource

As the air temperature increases, the air's capacity for water vapor:

  1. Increases

  2. Decreases

  3. Remains constant

  4. Is unrelated to air temperature and can either increase or decrease
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Warmer air has a higher kinetic energy, allowing it to hold more water vapor molecules in the gaseous phase. This relationship is described by the Clausius-Clapeyron relation, which shows that saturation vapor pressure increases with temperature.

Multiple choice geography in search of the source of wind variations in atmospheric pressure properties of air pressure belts the concept of bernoulli's principle air exerts pressure

In normal conditions, atmospheric pressure varies with__________ 

  1. Height

  2. Altitude

  3. Rainfall

  4. Temperature
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

 
  • Both atmospheric pressure and  the density of air decrease with altitude.
  • This is due to the fact that air molecules are constantly being pulled downwards (towards the center of the Earth) by Gravity.
  •  So, air molecules are tightly packed near the surface of the earth, compared to some higher altitude.