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 chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

 Acid rain happens because:

  1. sun leads to heating of upper layer of atmosphere

  2. the burning of fossil fuels release oxides of carbon, nitrogen, and sulphur in the atmosphere

  3. electrical charges are produced due to friction amongst clouds

  4. earth atmosphere contains acids
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Acid rain is caused by emissions of acidic gases like sulphur dioxide, nitrogen and carbon oxides, which react with the water  molecules in the atmosphere to produce acids. 

Multiple choice chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

Assertion (A): The oxides of nitrogen and sulphur combine with rainwater and come down as acid rain.
Reason (R): Acid rains cause depletion of ozone layer.

  1. Both A and R are true and R is the correct explanation of A

  2. Both A and R are true but R is not correct explanation of A

  3. A is true and R is false

  4. A is false and R is true
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Below are few properties of acid rain:
1) Acid rains are obtained due to oxides of nitrogen & sulphur.
2) Nitric acid and sulphuric acid in the atmosphere dissolve in rain water and come down to earth as acid rain. 
3) It may have a pH less than 5.6
4) There is no relation of acid rain with ozone layer.

Multiple choice chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

What is so important about the troposphere?

  1. Layer of water at or near Earths surface

  2. Contains ozone

  3. It contains weather and the oxygen that we breath

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

The troposphere is the lowest portion of earth's atmosphere and is also where all weather takes place. It contains approximately 75% of the atmosphere's mass and 99% of its water vapour and aerosols.

Multiple choice chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

The zone which extends above troposphere up to 50 km above sea level and contains dinitrogen, dioxygen, ozone and little water vapour is called:

  1. exosphere

  2. mesosphere

  3. ionosphere

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

Stratosphere ranges from 20-50 km. It is the layer above troposphere. Stratosphere contains ozone as it's main species.

Multiple choice chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

Region/regions of the atmosphere where temperature decreases with altitude is/are:

  1. thermosphere

  2. stratosphere

  3. troposphere

  4. ozonosphere
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The temperature decreases with the altitude (height) in the lowest 10-20km of the atmosphere called the Troposphere because most of the solar radiation passes through the atmosphere with little or no effect.  That radiation is observed by the solid earth surface and is transferred to the air above the surface by conduction.
Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

Which of the following includes all living organisms and all life-supporting regions of the Earth?

  1. Biosphere

  2. Ionosphere

  3. Stratosphere

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

The biosphere is the biological component of earth systems, which also include the lithosphere, hydrosphere, atmosphere, etc. The biosphere includes all living organisms on earth, together with the dead organic matter produced by them. 

Thus, the correct answer is option A.

Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

When biosphere turns into human dominated environment, it is called as

  1. Noosphere

  2. Troposphere

  3. Mesosphere

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

Human species more powerful than others in his ability to manipulate the environment. Man has created new artificial ecosystems - cities, where soil has been covered with concrete and steel. Man also changes weather year round to suit his needs. All this has finally changed the biosphere into a human-dominant environment, called as noosphere. This self-sufficient biosphere is being used by man as a means of resources for himself unmindful of the needs of other organisms.

Multiple choice

What are the three main parts of the geosphere?

  1. atmosphere, crust, core

  2. asthenosphere, lithosphere, atmosphere

  3. crust, mantle, core

  4. lithosphere, mantle, core
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The geosphere is divided into three main compositional layers based on density and chemical makeup: the crust (outermost), the mantle (middle), and the core (innermost).

Multiple choice

Which of the following does the "good" Ozone do to help us survive?

  1. It absorbs radiation

  2. It maintains global temperature

  3. It traps heat

  4. All of these answers are correct
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The stratospheric ozone layer is vital because it absorbs harmful UV radiation, helps regulate temperatures, and protects life on Earth. All these functions contribute to our survival.

Multiple choice

The ozone protects us from:

  1. Pollution

  2. The sun's UV rays

  3. Meteorites

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

The ozone layer in the stratosphere acts as a shield, absorbing the majority of the sun's harmful ultraviolet (UV) radiation before it reaches the Earth's surface.

Multiple choice

Ozone is made of what atoms?

  1. Oxygen

  2. Carbon

  3. Hydrogen

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

An ozone molecule (O3) consists of three oxygen atoms bonded together.

Multiple choice

The Ozone Layer is in the:

  1. troposphere

  2. Stratosphere

  3. mesosphere

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

The majority of atmospheric ozone is concentrated in the stratosphere, specifically within the ozone layer, which sits between 15 and 35 kilometers above the surface.

Multiple choice

What is an Ozone molecule formed from?

  1. 3 oxygen atom

  2. 3 Carbondioxide atom

  3. 2 carbondioxide atom

  4. 2 hydrogen atom and 1 oxygen atom
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An ozone molecule is an allotrope of oxygen consisting of three oxygen atoms (O3).