Environmental Studies · Geography

Atmospheric Structure and Ozone

1,401 Questions

Atmospheric structure and ozone layer topics examine the Earth's atmospheric layers, the impact of solar radiation, and ozone depletion mechanisms. These environmental science concepts are crucial for general awareness sections in multiple competitive examinations. Review these questions to solidify your understanding of the stratosphere, polar vortex effects, and greenhouse gases.

Earth's atmospheric layersOzone layer depletionSolar ultraviolet radiationPolar vortex effectsCarbon dioxide impactOzone-depleting substances

Atmospheric Structure and Ozone Questions

Multiple choice physics heat and energy

Process of warming of planet's surface and its lower atmosphere by the absorption of infrared radiations of long wavelength given out from the surface of a planet.

  1. Global warming

  2. Green house effect

  3. Pasteur effect

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

Process of warming of planet's surface and its  lower atmosphere by the absorption of infrared radiations of long wavelength given out from the surface of a planet is known as green house effect. In 1824, Joseph Fourier discovered the green house effect.

Multiple choice geography in search of the source of wind global pressure belts pressure belts atmospheric conditions

Daily weather changes in the atmosphere are associated with ______.

  1. troposphere

  2. mesosphere

  3. inosphere

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

The lowest layer of the earth that ranges up to 16 km thick is called troposphere. Most of the weather phenomenon takes place in this region. The troposphere is denser than the layers of the atmosphere above, as it contains up to 75% of the mass of the atmosphere.

Multiple choice commercial applications receding water table water and ocean conservation water resources and conservation water conservation and irrigation

Why earth appears blue from the space?

  1. About 71% of the earths surface is covered with water which gives blue colour to earth.

  2. Earth is covered with blue air.

  3. Earth is covered with blue coloured mountains and rocks.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The earth is predominantly (71 % of the earth's surface) covered with water. Water absorbs the white light in the radiation (sunlight). The sunlight through appears white it is actually a combination of lights of several different colors (Violet, indigo, blue, green, yellow, orange and red). 
  • When sunlight reaches the water; the water absorbs, lights of all colors in the white light and reflects only blue light. Thus, the earth from space appears blue. If the water absorbs all colors and reflects only yellow, then it would appear yellow.
Multiple choice electromagnetic spectrum electromagnetic waves physics

Which one of the following is the primary effect of UV radiation caused due to depletion of ozone layer?

  1. Heart attack

  2. Skin cancer

  3. High fever

  4. All of these

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

The ozone layer prevents most harmful UV wavelengths of ultraviolet light (UV light) from passing through the Earth's atmosphere. These wavelengths cause skin cancer, sunburn and cataracts, which were projected to increase dramatically as a result of thinning ozone, as well as harming plants and animals.

Multiple choice physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

How does lightning help the atmosphere?

  1. Increases the temperature

  2. Brings rain

  3. Increases the ozone layer

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

Explanation: Lightning causes large electric discharge in the atmosphere resulting in the formation on $\displaystyle { O } _{ 3 }$, i.e., Ozone from $\displaystyle { O } _{ 2 }$. Ozone layer is very helpful for protecting the atmosphere.

Multiple choice chemistry air around us importance of oxygen is air present everywhere around us? air as a natural resource

Ozone hole means :

  1. thinning of the ozone layer

  2. a large sized hole in ozone layer

  3. small hole scattered in the ozone layer

  4. thickening of ozone in ozone layer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

"Ozone hole" means thinning of the ozone layer.


The ozone hole is not technically a “hole” where no ozone is present but is actually a region of exceptionally depleted ozone layer.

Hence the option A is correct.

Multiple choice chemistry air around us importance of oxygen is air present everywhere around us? air as a natural resource

The part of atmosphere which contains constant gases with known composition called :

  1. Homosphere

  2. Thermosphere

  3. Heterosphere

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

The part of the atmosphere which contains constant gases with a known composition called homo-sphere.

The homosphere is the lower of the two and the location in which turbulent mixing dominates the molecular diffusion of gases. In this region, which occurs below 100 km (about 60 miles) or so, the composition of the atmosphere tends to be independent of height.

Multiple choice chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

Ozone hole is maximum spread over:

  1. Europe

  2. Antartica

  3. India

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

The ozone hole is caused by the effect of pollutants in the atmosphere destroying stratospheric ozone. During the Antarctic winter something special happens to the Antarctic weather.

Firstly, strong circular winds form that blow around the whole continent, this is known as the "polar vortex" -  this isolates the air over Antarctica from the rest of the world.

Secondly, special clouds form called Polar Stratospheric Clouds. Clouds don't normally form in the stratosphere and these turn out to have the effect of concentrating the pollutants that break down the ozone, so speeding the process up.

Multiple choice chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

Ozone layer of stratosphere requires protection from indiscriminate use of:

  1. fungicides, insecticides, bactericides and medicines

  2. aerosols and high flying jets

  3. atomic explosions and industrial wastes

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

Aerosols are minute particles suspended in the atmosphere. When these particles are sufficiently large, we notice their presence as they scatter and absorb sunlight. Their scattering of sunlight can reduce visibility (haze) and redden sunrises and sunsets. Aerosols also can act as sites for chemical reactions to take place. The most significant of these reactions are those that lead to the destruction of stratospheric ozone. During winter in the Polar Regions, aerosols grow to form polar stratospheric clouds. The large surface areas of these cloud particles provide sites for chemical reactions to take place. These reactions lead to the formation of large amounts of reactive chlorine and, ultimately, to the destruction of ozone in the stratosphere