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 geography inside our earth the earth's structure structure of the earth our world components of earth earth and structure

Layer of gases around the earth is called __________.

  1. lithosphere

  2. hydrosphere

  3. atmosphere

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

C. Atmosphere

The thin layer of gases surrounding the earth is called the atmosphere. Earth's atmosphere is separated into five layers known as the troposphere, stratosphere, mesosphere, ionosphere and exosphere.

Multiple choice geography inside our earth the earth's structure structure of the earth our world components of earth earth and structure

Atmosphere of the earth is held by _____________.

  1. Frictional force

  2. Reaction force

  3. Electromagnetic force

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

D.  Gravitational Force

Earth's atmosphere is the layer of gases around the Earth. The atmosphere is held in place by Earth's gravity. It is made up of nitrogen (78.1%) and oxygen (20.9%), with small amounts of argon (0.9%), carbon dioxide (0.035%), water vapor, and other gases. The atmosphere protects life on Earth by absorbing (taking) ultraviolet rays from the sun. It makes our days cooler and our nights warmer.

Solid particulates, including ash, dust, volcanic ash, etc. are small parts of atmosphere. They are important in making clouds and fog.

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

__________ and __________ are the major components of the atmosphere.

  1. Nitrogen and argon

  2. Carbon dioxide and oxygen

  3. Nitrogen and oxygen

  4. Oxygen and carbon dioxide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nitrogen and oxygen gases are the major components of the atmosphere. Around 80% of the atmosphere is nitrogen and 20% is oxygen, by volume. 

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

Which of the following statements is true regarding earth's atmosphere?

  1. It gets denser with increase in altitude

  2. It gets thinner with increase in altitude

  3. Its thickness is atleast one-fourth the radius of the earth.

  4. It contains no solid particles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The earth's atmosphere gets thinner with the increase in altitude. The earth's atmospheric layers are Troposphere, Stratosphere, Mesosphere, Ionosphere, and Exosphere. Each layer has its own importance. 

Option (B) is correct.

Multiple choice geography atmosphere and temperature atmosphere and its structures what is around us? the atmosphere

Holes in the ___________ layer of the atmosphere allow ____________ ___________ of the sun which causes ____________.

  1. Ozone layer, gamma rays, brain tumour

  2. Ozone layer, harmful rays, skin cancer

  3. Greenhouse, x rays, brain tumour

  4. Ozone layer, alpha rays, brain tumour
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Air pollution leads to the greenhouse effects due to the constant emission of poisonous gases from vehicles, households and industries which the atmosphere cannot use. Gases remain trapped inside the atmosphere causing the global temperature to rise. This is called global warming. This has resulted in holes in the ozone layer due to which harmful rays of the sun are allowed to enter the earth's atmosphere causing skin cancer and various other ailments. 

Multiple choice zoology natural resources - air, water and land carbon cycle ozone layer depletion and causes depletion of ozone layer

Identify the incorrect statement from the following

  1. Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer

  2. Ozone absorbs the intense ultraviolet radiations of the sun

  3. Depletion of ozone layer is because of its chemical reactions with CFC

  4. Ozone absorbs infrared radiations
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ozone doesn't absorb infrared radiation , it absorbs ultraviolet radiations .

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

$CO _2$ absorbs some of the ....... that radiates from the surface of Earth to space

  1. ozone

  2. heat

  3. ultraviolet light

  4. smog
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
CO2 is a greenhouse gas. When radiations of the sun reach earth, they are reflected back from the earth's surface. CO2 absorbs some of the radiation and prevents it from getting escaped due to which the temperature of earth rises. This is called the greenhouse effect. Excess concentration of CO2 thus, can lead to an abnormal increase in earth's temperature and cause global warming. 
So, the correct answer is 'heat'.
Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

Ozone is

  1. Protector in troposphere

  2. Pollutant in troposphere

  3. Green house gas

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

Ozone is a significant gas in the stratosphere because it absorbs the UV rays and do not allow them to reach the earth's surface. There it is formed by the reaction of oxygen with UV rays. However, tropospheric or ground-level ozone is formed as a secondary pollutant and is harmful. It acts as a major constituent of the photochemical smog. It also traps and reflect back the infra-red rays coming from the earth's surface. Here, it is formed when the primary pollutants react with the oxygen in the presence of sunlight. So, it acts as a greenhouse gas.

Hence, the correct answer is 'Both B and C'.

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

Cyclic variations of CO2CO2 concentration in the atmosphere are due to changes in

  1. photosynthetic activity

  2. respiratory activity

  3. burning of fossil fuels

  4. action of infra-red rays
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The burning of fossil fuels such as gasoline, coal, oil, natural gas in combustion reactions results in the production of carbon dioxide. There are cyclic variations of Carbon dioxide concentration in the atmosphere due to this reason. 

So, the correct optionos 'Burning of fossil fuels'.

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

Bacterial decomposition of organic matter, releases $NO _{2}$ into

  1. Stratosphere

  2. Troposphere

  3. Atmosphere

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

Bacterial decomposition of organic matter releases various gases, including nitrogen compounds, into the atmosphere. The atmosphere is the general reservoir for these gases.