Global Warming Questions and Answers

Environment Management Questions and Answers – Global Warming

This set of Energy & Environment Management Multiple Choice Questions & Answers (MCQs) focuses on “Global Warming “.

1. Human activities cause global warming.
a) True
b) False

Explanation: During the previous few decades of industrialization and population development, human activities have substantially polluted the atmosphere, to the point where it has begun to negatively impact the environment’s plants and species.

2. Which one of the following cause global warming?
a) Radiative forcing
b) Earth gravitation force
c) Oxygen
d) Centripetal force

Explanation: Radiative forcing is a measurement of a climatic factor’s influence on a particular amount of downward directed radiant energy. A shift in the fraction of the radiation reaching the earth’s surface causes global warming.

3. How human activity has influenced global warming?
a) By planting more trees
b) By causing changing in gravitational force
c) By changing the radiative balance governing the Earth
d) By protecting environment

Explanation: On various periods, human activity has altered global surface temperature through affecting the radiative balance that governs the Earth. The introduction of greenhouse gases into the environment causes more environmental damage.

4. Which one of the following is the anthropogenic radiative forcing of climate?
a) Aerosols
b) Cement
c) Paper
d) Glass

Explanation: Aerosols are a significant source of anthropogenic climate radiative forcing. Aerosols together block, reflect, and absorb a portion of the sun’s energy. Negative radiative force is also created as a result of this.

5. Which one of the following land use causes global warming?
a) Increase in the fertility of soil
b) Surface reflectance
c) Forestation
d) Adopting organic farming

Explanation: Surface reflectance, often known as Earth albedo, is the most direct method that land use changes can affect global warming. For example, cropland can be used to replace forest for surface reflectance.

6. Changes in the composition of the atmosphere is an example of____________________
a) Internal forcing
b) External forcing
c) Mid forcing
d) Gravitational forcing

Explanation: For years to decades at a time, the climate system generates random changes in global temperature, but long-term changes are only caused by external forcing. Changes in the composition of the atmosphere, as well as increased greenhouse gas concentrations, are examples of external forcing.

7. What is the main reason for melting of ice sheets?
a) Increase in the oxygen content
b) Global warming
c) Decrease in carbon dioxide content
d) Noise pollution

Explanation: Global warming is having an impact on numerous parts of the globe. It is the result of faster melting of ice sheets, permafrost, and glaciers, resulting in a continuing rise in average sea levels.

8. Which one of the following is the effect of global warming?
a) Maintaining sea level
b) Proper rainfall
c) Desertification
d) Afforestation

Explanation: One of the consequences of global warming is desertification. Resulting in water shortages and a great deal of misery in the dry regions that have been converted to forests. Desertification is the term for this phenomenon.

9. Soot only warm Earth’s climate system.
a) True
b) False

Explanation: Depending on whether it is airborne or deposited, soot either cools or warms the Earth’s climate system. Soot in the atmosphere absorbs solar radiation directly, heating the atmosphere and cooling the surface.

10. Which one of the following cause global warming?
a) Carbon dioxide
b) Oxygen
c) Nitrogen
d) Hydrogen

Explanation: The earth’s surface absorbs around 75% of the solar energy that reaches it; the rest of the heat is radiated back into the atmosphere. Some of the heat is trapped by greenhouse gases such as carbon dioxide, which are released as a result of a variety of human activities.

11. How many percent of carbon dioxide increased in the atmosphere since pre-industrial times?
a) About 10%
b) About 20%
c) About 30%
d) About 40%

Explanation: Since pre-industrial times, the amount of carbon dioxide in the atmosphere has increased by around 30%. More heat is trapped in the lower atmosphere as a result of this. The main causes are human activities, civilization, and population growth.

12. What is the full form of UNFCC with respect to global warming convention?
a) United Nations Framework Convention on Climate Change
b) United Nations Federation Convention on Climate Change
c) United Nations Framework Center on Climate Change
d) United Nations Federation Center on Climate Change

Explanation: Many countries have signed a treaty to limit greenhouse gas emissions under the United Nations Framework Convention on Climate Change in order to control the continual rise in carbon dioxide levels (UNFCC).

13. Who measures the global warming rate?
a) Astrologers
b) Physicist
c) Philosopher
d) Climatologist

Explanation: Climatologists are usually the ones who calculate global warming. Global warming is speeding up quicker than climatologists predicted. In 1995, it was expected that the temperature would rise by 3.5 to 10 degrees Celsius in the twenty-first century.

14. Which one of the following result takes place due to global warming?
a) Maintaining steady temperature
b) Changes in the rainfall
c) Pleasant environment
d) Causing less pollution

Explanation: Changes in temperature, as well as the amount of rainfall, result from global warming, causing a slew of issues. These changes in rainfall cause a variety of issues, including floods and droughts.

Global warming is the long-term warming of Earth’s climate system that has been seen from the pre-industrial period (between 1850 and 1900) as a result of human activity, principally fossil fuel combustion, which increases heat-trapping greenhouse gas levels in the atmosphere. Human activity, largely the burning of fossil fuels that pump carbon dioxide (CO2), methane, and other greenhouse gases into the atmosphere, is causing global warming, which is the progressive heating of the Earth’s surface, oceans, and atmosphere. Global warming is already having a significant impact on the earth.

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