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 spectra the electromagnetic spectrum electromagnetic spectrum electromagnetic waves

Earth's atmosphere is transparent for

  1. only the visible light

  2. only the X-rays
  3. only the $\gamma$- rays

  4. visible light and microwaves
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Earth's atmosphere is divided into different layers, out of which the ozone layer absorbs the X-rays and $\gamma$-rays whereas visible light and microwaves are the waves which are not absorbed by any layer of atmosphere.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

Ozone is formed in stratosphere by action of ultravoilet radiations on oxygen.

  1. True

  2. False

  3. Either

  4. Neither
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Ozone (O3) molecule is made up of three oxygen atoms. It is formed in the stratosphere when single oxygen atom combines with a molecule of oxygen i.e. when [O] combines with O2. Oxygen molecule consisting of two oxygen atoms splits into atomic oxygen in the presence of ultraviolet radiation. The atomic oxygen then combines with another molecule of oxygen to form ozone.
The reactions are as follows:
      UV light
O2 ---------------> [O] + [O]
[O] + O2 ---------->O3
Hence, the statement given in the question is correct.
So, the correct answer is 'True'.
Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

Closest atmospheric layer to earth's surface is known as

  1. Boundary Layer

  2. Atmosphere

  3. Biosphere

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

The troposphere is the lowest layer, but the boundary layer is the specific portion of the troposphere that is directly influenced by the Earth's surface. While 'troposphere' is the standard answer for atmospheric layers, 'Boundary Layer' is technically correct in meteorological contexts.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

The earth's atmosphere is divided into layers based on the vertical profile of:

  1. Air pressure

  2. Air temperature

  3. Air density

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

The atmosphere is stratified into layers like the troposphere, stratosphere, mesosphere, and thermosphere based on how the air temperature changes with altitude.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

In which layer of atmosphere rainbow formation occurs?

  1. Mesosphere

  2. Stratosphere

  3. Ionosphere

  4. Troposphere
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rainbows are optical phenomena caused by the refraction and reflection of light in water droplets, which are found in the troposphere where weather occurs.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

Which of the following layer of atmosphere receives an extraordinary amount of energy from the sun?

  1. Stratosphere

  2. Ionosphere

  3. Mesosphere

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

The ionosphere contains high concentrations of ions and free electrons and is directly exposed to high-energy solar radiation, which causes ionization.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

Multiple Choice Questions
The zone of atmosphere In which ozone layer is present is

  1. Troposphere

  2. Stratosphere

  3. Mesosphere

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

Ozone is a triatomic gas forming a layer of protective shield against harmful radiations of the sun such as UV-B and UV-C. The ozone layer is present in the upper part of the atmosphere called Stratosphere.

So, the correct answer is option B, Stratosphere.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

The aurora is produced by:

  1. Reflections of sunlight by polar ice fields

  2. Fast-moving charged particles colliding with air molecules

  3. Burning oxygen caused by the intense sunlight at high altitude

  4. The combination of molecular and atomic oxygen to form ozone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Auroras occur when charged particles from the sun (solar wind) collide with atoms and molecules in the upper atmosphere, exciting them and causing them to emit light.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

In which layer of atmosphere temperature remains constant?

  1. Mesosphere

  2. Thermosphere

  3. Stratosphere

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

In the stratosphere, the temperature increases with altitude due to ozone absorption of UV radiation, but there are regions where the temperature gradient is near zero or stable, often contrasted with the troposphere's lapse rate.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

Which is second major layer of earth's atmosphere?

  1. Troposphere

  2. Mesosphere

  3. Thermosphere

  4. Stratosphere
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The layers of the atmosphere starting from the surface are: troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Therefore, the stratosphere is the second layer.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

Our atmosphere is made of many layers. The layers nearest to the surface of the earth is known as

  1. Geosphere

  2. Stratosphere

  3. Troposphere

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

The troposphere is the lowest layer of the Earth's atmosphere, extending from the surface up to the tropopause.