Environmental Studies · Geography

Atmospheric Structure and Ozone

1,319 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 biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Checking of re-radiation heat by atmospheric dust, $O _3, O _2$ and water vapours is

  1. Ozone layer effect

  2. Solar effect

  3. Radioactive effect

  4. Green house effect
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The greenhouse effect can be defined as the trapping of radiations of the sun by the tropospheric gases and preventing these radiations from reflecting back to space. The tropospheric gases involved are atmospheric dust, Ozone, Carbon dioxide and water vapour. These gases are responsible for causing global warming.

A. Ozone layer effect occurs in stratosphere only because of ozone.
B. Solar effect is caused due to solar flares.
C. The radioactive effect is due to radioactive elements like uranium and plutonium.
D. The greenhouse effect is due to greenhouse gases.
Hence, the correct answer is 'Greenhouse effect.'

Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Checking of reradiating heat by atmospheric dust, $O _3, CO _2$ and water vapours is

  1. Ozone layer effect

  2. Radioactive effect

  3. Greenhouse effect

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

The greenhouse effect can be defined as the capture and re-radiation of the infre-red radiations by the tropospheric gases like ozone, carbon dioxide, water vapours and dust. This lead to the increase in the temperature of the atmosphere, and as a result the over all temperature of the earth increases, causing global warming.

A. Ozone layer effect is the absorption of UV rays.

B. Radioactive effect is the release of the radiations by radioactive substances.

C. The greenhouse effect can be defined as the capture and re-radiation of the infre-red radiations by the tropospheric gases like ozone, carbon dioxide, water vapours and dust.

D. Solar effect is the massive release of solar flares.

Hence, the correct answer is 'Greenhouse effect'.

Multiple choice

A gas threatening Earth's ozone layer is:

  1. Sulfur dioxides

  2. chloroflurocarbons

  3. the greenhouse effect

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

Chlorofluorocarbons (CFCs) are chemical compounds that, when released into the atmosphere, break down and release chlorine atoms that destroy ozone molecules.

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

The region in atmosphere containing water vapour is:

  1. thermosphere

  2. stratosphere

  3. troposphere

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

The troposphere is the lowest region of the atmosphere, i;e., closest to earth's surface. It extends roughly to a height of about 11 km. This is the region of all living organisms including, animals and plants. 


About 70% of the total mass of the atmosphere and practically all the water vapours and dust particles are concentrated in this region

Hence, the correct option is $\text{C}$

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

In which layer, most of the atmospheric air is present?

  1. Troposphere

  2. Stratosphere

  3. Mesosphere

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

Fifty percent of the total mass of the atmosphere is located in the lower $5-6$ $km$ of the troposphere. Nearly all atmospheric water vapour or moisture is found in the troposphere. So, it is the layer where most of the earth's weather takes place.

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

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).