Tag: environmental changes

Questions Related to environmental changes

The release of chlorofluorocarbons by the use of refrigerators, air conditioners, deodorants, etc., are destroying the ________ layer of the atmosphere.

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. Mesosphere

  2. Ionosphere

  3. Humidity

  4. Ozone

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Correct Option: D
Explanation:

D. Ozone

When the CFC refrigerants are leaked from refrigeration or air-conditioning systems, they drift around the lower layers of the atmosphere. Slowly they start infiltrating into the upper layers of the atmosphere and soon reach the ozone rich stratosphere, where they undergo major chemical changes.

The phenomenon caused due to the use of fossil fuels is _______________.

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. greenhouse effect

  2. earthquakes

  3. ozone depletion

  4. environmental imbalance

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Correct Option: A
Explanation:

When the industrial revolution started, the level of $CO _2$ in the atmosphere was around 280 parts per million by volume but that has risen to around 380 ppmv due to our burning of fossil fuels. Because of tremendous rise in $CO _2$ (about 35% rise) the global warming scenario has been deteriorated or faster. The melting of arctic ice, severe climate changes are some of the effects among many, of the global warming. Inefficiency in the use of fossil fuels which increased the $CO _2$ level by 17%.

The rise in the temperature of the atmosphere is called _________.

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. global warming

  2. black rain

  3. hailstorm

  4. blizzard

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Correct Option: A

Carbon dioxide and some other gases trap the heat radiated by the earth and cause ________.

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. Global warming

  2. Ozone depletion

  3. Greenhouse effect

  4. Acid rain

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Correct Option: C

Which one of the following is not responsible for the greenhouse effect?

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. Carbon dioxide

  2. Methane

  3. Argon

  4. Chlorofuorocarbon

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Correct Option: C
Explanation:

Argon :-


The major greenhouse gases (GHG’s) solely responsible for greenhouse effect are Carbon dioxide, Ozone, Methane and Water vapor. Although these gases comprise 1% of our atmosphere, they act like a thick warm blanket outside that surrounds this planet and regulate climate control. Greenhouse effect is not bad. In fact, it is needed for all of us to survive on planet Earth. In short, the greenhouse effect is nothing but a naturally occurring process designed by nature that aids in heating earth’s surface and helps to maintain ecological balance.

Now, while some of that heat dissipates into space, some of it burns along the atmosphere, and some of it penetrates the atmosphere and finds its way into the lower atmosphere and the planet’s surface. This in turn raises the average temperature of the Earth. Therefore, the increase in the Earth’s surface temperature due to increase in the number of greenhouse gases leads to global warming.

Which one of the following is not a cause of environmental pollution?

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. Population

  2. Industrialization

  3. Afforestation

  4. Vehicles

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Correct Option: C
Explanation:

The process of converting a non-forest land into a forest is known as Afforestation. Afforestation is highly important to maintain the biodiversity. Afforestation is necessary to combat the issues of global warming, soil erosion, pollution, and the maintenance of biodiversity and ecological balances. Afforestation is not a cause of environmental pollution.

Population, Industrialization and vehicles are the major causes of environmental pollution.

_____ is one of the methods to conserve forests.

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. Deforestation

  2. Afforestation

  3. Plantation

  4. None of these

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Correct Option: B

The ozone layer absorbs __________ and protects the living beings of the earth. 

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. water vapour

  2. light

  3. infrared rays

  4. ultraviolet rays

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Correct Option: D
Explanation:

The ozone layer basically absorbs harmful emissions from the sun like the ultraviolet rays, which is why life on earth is able to thrive. No other planet known to man has conditions that can favor life, and without the ozone layer, Earth would also become unable to support life. Below are some things that would happen if the ozone layer was damaged to any extent.

Cancer: one of the things that would be frequently experienced by human beings on Earth is skin cancer. Since the layer would not be able to effectively block UV rays, human skin would most likely be endangered.

Cataracts: this refers to a condition where human vision goes blurred. Almost all human beings on earth would have some sort of visual impairment without the ozone layer.

Which day is celebrated as World Ozone Day?

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. 16th May

  2. 16th August

  3. 16th September

  4. 16th November

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Correct Option: C
Explanation:
September 16th
This special day is held on September 16th to mark the day back in 1987 when the Montreal Protocol was signed. As a result, a number of special events such as talks and seminars are held in the Canadian city of Montreal on this day.

World Ozone Day has been celebrated since 1994 and was established by the United Nations General Assembly. The day is mainly intended to spread awareness of the depletion of the Ozone Layer and search for solutions to preserve it. People from all over the world are expected to gather in Montreal on September 16th to join the talks and seminars.

World Ozone Day is also celebrated all around the world. Educators usually set aside this day to teach their students about the Ozone layer and many schools organize special events and activities to raise awareness. This is one event that everyone can experience and enjoy together.

In which year the first ozone hole was discovered?

geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

  1. 1980

  2. 1983

  3. 1985

  4. 1990

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Correct Option: C
Explanation:
1985
The discovery of the Antarctic "ozone hole" by British Antarctic Survey scientists Farman, Gardiner and Shanklin (first reported in a paper in Nature in May 1985) came as a shock to the scientific community, because the observed decline in polar ozone was far larger than anyone had anticipated.