This set of Energy & Environment Management Multiple Choice Questions & Answers (MCQs) focuses on “Global Warming “.
1. Which one of the following cause global warming?
a) Carbon dioxide
b) Oxygen
c) Nitrogen
d) Hydrogen
View Answer
Explanation: About 75% of the solar energy reaching the earth is absorbed by the earth’s surface the rest of the heat radiate back to the atmosphere. Some of the heat is trapped by greenhouse gases as carbon dioxide which is released by various human activities.
2. 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%
View Answer
Explanation: The carbon dioxide in the atmosphere has increased about 30% since pre-industrial times. It causing more heat to trapped in the lower atmosphere. Human activities, industrialization and population growth are the main reasons.
3. 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
View Answer
Explanation: In order to control the continuous increase in the carbon dioxide level many countries have signed a convention to reduce greenhouse gas under the United Nationals Framework Convention on Climate Change (UNFCC).
4. Who measures the global warming rate?
a) Astrologers
b) Physicist
c) Philosopher
d) Climatologist
View Answer
Explanation: Global warming is usually calculated by climatologist. Global warming is accelerating faster than that calculated by climatologists. It was predicted in 1995 that in 21st century there would be raise in temperature by 3.5 to 10 degree Celsius.
5. 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
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Explanation: Global warming leads to changes in temperature and also changes the amount of rainfall and causes various problems. These fluctuations in rainfall cause various problems and leading to either floods or droughts.
6. Human activities cause global warming.
a) True
b) False
View Answer
Explanation: Human activities during the last few decades of industrialization and population growth have seriously polluted the atmosphere to the extent that it has begun to seriously affect the vegetation and organisms in the environment.
7. Which one of the following cause global warming?
a) Radiative forcing
b) Earth gravitation force
c) Oxygen
d) Centripetal force
View Answer
Explanation: Radiative forcing is a measure of the influence of a given climatic factor that has an amount of downward directed radiant energy. Global warming is cause through a change in the fraction of the radiation reaching the surface of the earth.
8. 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
View Answer
Explanation: Human activity has influenced global surface temperature by changing the radiative balance governing the Earth on various timescales. Introduction of greenhouse gases to environment results in greater damage to the environment.
9. Which one of the following is the anthropogenic radiative forcing of climate?
a) Aerosols
b) Cement
c) Paper
d) Glass
View Answer
Explanation: Aerosols represents an important anthropogenic radiative forcing of climate. Collectively, aerosols block reflect and absorb a portion of income solar radiation. This also creates negative radiative forcing.
10. 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
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Explanation: The most direct way in which changes in land use can influence global warming is surface reflectance or Earth albedo. For example for surface reflectance is replacement of forest by setting cropland.
11. Changes in the composition of the atmosphere is an example of____________________
a) Internal forcing
b) External forcing
c) Mid forcing
d) Gravitational forcing
View Answer
Explanation: The climate system generate random changes in global temperature for years to decades at a time, but long terms changes emanate only from external forcing. Increased in the concentration of greenhouse gases is an example of external forcing including changes in the composition of the atmosphere.
12. 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
View Answer
Explanation: Global warming is affecting various places around the world. It is a accelerated the melting of ice sheets, permafrost and glaciers which there by causing rise in the average sea levels to greater extent continuously.
13. Which one of the following is the effect of global warming?
a) Maintaining sea level
b) Proper rainfall
c) Desertification
d) Afforestation
View Answer
Explanation: Desertification is one of the effects of global warming. Causing water shortages and an intense amount of distress in the dry regions which are degraded into forest. This process is called desertification.
14. Soot only warm Earth’s climate system.
a) True
b) False
View Answer
Explanation: Soot either cool or warm Earth’s climate system, depending on whether it is airborne or deposited. Atmospheric soot which directly absorbs solar radiations, which heats the atmosphere and cools the surface.
Sanfoundry Global Education & Learning Series – Energy & Environment Management.
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