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 commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

The sea breeze is conducted due to the creation of high pressure on the 

  1. Land

  2. Sea

  3. Air

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

During, the daytime when the air above the land gets heated up, the air molecules absorbs the heat and the intermolecular forces between the air molecules become weak and its kinetic energy increases. The air molecules move apart and become less dense and they become lighter and rises up. This creates a low-pressure zone on land and high pressure on above the sea thus cold air from the sea rushes from sea to land and creates sea breeze.

So, the correct answer is option B.

Multiple choice commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

The sea breeze is caused due to the low pressure generated over

  1. Land

  2. Sea

  3. Air

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During, the daytime when the air above the land gets heated up, the air molecules absorbs the heat and the intermolecular forces between the air molecules become weak and its kinetic energy increases. The air molecules move apart and become less dense and they become lighter and rises up. This creates a low-pressure zone on land and thus cold air from the sea rushes from sea to land and thus creates sea breeze.

So, the correct answer is option B.

Multiple choice commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably:

  1. Decrease as the air becomes drier

  2. Decrease as the air becomes moister

  3. Increase as the air becomes drier

  4. Increase as the air becomes moister
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As the air cools further during the night, water vapor condenses out of the air to form fog. This removal of water vapor decreases the dew point temperature.

Multiple choice commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

Typically, water vapor occupies about what percentage of the air's volume near the earth's surface?

  1. About 78 percent

  2. About 21 percent

  3. Close to 10 percent

  4. Less than 4 percent
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water vapor is a variable gas in the atmosphere, typically ranging from 0 to 4 percent by volume depending on temperature and location. It is most concentrated near the surface in tropical regions.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

The intensity of the atmospheric electric field is, normally,

  1. greater in the middle of the day than at morning

  2. smaller in the middle of the day than at morning

  3. same in the middle of the day as at morning

  4. zero in the middle of the day and at morning
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The fine day net positive charge sets up an electric field between the negative earth and the net positive charge in the air and this electric field stores electrical energy. The positive charge acts by induction on the earth and electromagnetic devices.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

The intensity of atmospheric electric field is :

  1. same in winter as in summer

  2. lesser in winter than in summer

  3. greater in winter than in summer

  4. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Experiments have shown that the intensity of the electric field is greater in the middle of the day than at morning or night and is also greater in winter than in summer, which is totaly based on 'Fine weather' theory.
Multiple choice geography world of diversities elements of weather and climate :rainfall and air pressure diversified world environmental regions (zones)

The rate of cooling of ascending air is_______.

  1. $1^o$C for every 165metres
  2. $2^o$C for every 300 metres
  3. $2.5^o$C for every 300 metres
  4. $3^o$C for every 300 metres
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The normal lapse rate for dry air as it rises is approximately 1 degree Celsius for every 165 meters of ascent.

Multiple choice zoology bio-geo chemical cycles in nature nutrient cycles- flow of substances carbon cycle biogeochemical cycles - gaseous

Carbon dioxide constitutes about 0.03% of the atmosphere

  1. By volume

  2. By weight

  3. By mass

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

The air in our atmosphere is composed of molecules of different gases. The most common gases nitrogen  (78%), oxygen (about 21%), argon (almost 1%) and carbon dioxide (0.03%). Other molecules are present in  the atmosphere as well, but in very small quantities. Composition of air is measured in percent by volume,  at sea level at 15C and 101325 Pa.

Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

During day time air blows-

  1. from the land to the sea

  2. from the sea to the land

  3. from one sea to another

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
During day time air blows $\rightarrow$ from sea to land, because in day time the land is warmer than sea.
Therefore air pressure of land is lower than sea.
As a result air blows from sea to land.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle
State True or False :
Convection currents are set up giving rise to sea breezes. 

  1. True

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

Yes, it is true; convection current are set up giving rise to sea breezes.

Convectional currents are the result of differential heating. Less dense(lighter) warm materials rise while heavier(more dense) cool materials sink. It is the movement that creates circulation pattern known as convectional current in atmosphere, water and mantle of earth.

Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth

Which of the following is an example of mode of transport making use of air pressure ?

  1. Sailing boat in an ocean

  2. Rowing boat on a windy day

  3. Aeroplane in a sky

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A moving boat's sail is shaped as an airfoil like the wing of a plane. When air moves over a plane's wing, from front to back, wind flowing over the top of the wing has to travel farther than wind flowing under the wing's bottom surface. This creates a pressure difference that lifts the plane.
Hence all the above is the answer.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth

Which of the following is not an example of air exerting pressure ?

  1. Pressing the brakes of a bicycle.

  2. Filling up the bicycle tube with air

  3. Riding bicycle against the flow of wind

  4. Playing with the kite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Brakes on a bicycle work using friction (the rubbing force between two things that slide past one another while they're touching). Hence brakes doesn't work on the principle of air exerting pressure.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth

A strip of paper is held between thumb and finger. If we blow over the paper, what will happen to the paper strip ?

  1. The paper strip will be lifted up

  2. The paper strip will bend down

  3. The paper strip will oscillate up and down alternately

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The still air below the paper had greater pressure than the moving air above the paper resulting in paper getting pushed up.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth

An experiment is conducted to understand air pressure. Two identical balloons are filled with little water and blown. Then they are tied to a string some distance apart. What happens when air is blown in between them ?

  1. They move closer to each other.

  2. They move further apart.

  3. One moves up and other moves down

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

According to Bernoulli's principle, an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure. Blowing air between the balloons creates a low-pressure region, causing the higher atmospheric pressure on the outside to push the balloons toward each other.

Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

Arrange the following steps in the proper order to explain how a sea breeze occurs, near coastal regions.
(a) The temperature of land rises rapidly as compared to sea, because the specific heat capacity of land is five times less than that of water.
(b) Due to the low pressure over the land mass, the cool air over the sea starts blowing towards the land.
(c) The sun shines equally on the land mass and sea, giving equal amount of heat energy to both.
(d) The air above the land becomes hot and light, rises up and hence creates the low pressure over the land.

  1. a d c b

  2. c d a b

  3. c a b d

  4. c a d b
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Near the coastal regions, when (c) the sun shines equally on the land mass as well as the sea giving an equal amount of heat energy.But (a) the temperature of land rises rapidly as compared to the sea water, as specific heat capacity of water is five times greater than that of land. So, water requires more heat energy to raises its temperature by $1^{\circ}C$. Then (d) the air above the land mass becomes hotter and lighter and hence rises up, which creates a low pressure over the land. (b) Due to the low pressure over the land mass, the cool air over the sea starts blowing towards the land, by this producing sea breeze.