Tag: greenhouse effect

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Questions Related to greenhouse effect

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

Green house effect is due to the accumulation of

  1. $O _3$ and depletion of $CO _2$
  2. $O _3$ and $CO _2$
  3. $CO _2$ and depletion of $O _3$

  4. Green plants
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Carbon dioxide and ozone are called greenhouse gases due to their property of absorbing radiation and emitting heat, but the balanced effect depends upon the lifetime and longevity of these gases, Carbon dioxide has  increased in atmosphere due to increased burning of fossils, cutting of trees, Industrial application, trapping of heat waves can cause excessive heating of earth's temperature.
Ozone is naturally found in the stratosphere where it is constantly broken down by UV rays, but the burning of organic volatile compounds and emission of nitrogen oxides have led to the formation of the ozone layer in the atmosphere resulting in excessive trapping of heat
Hence, the correct answer is 'O$ _{3}$ and CO$ _{2}$'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Which one of the following is mismatched?

  1. Fossil fuel burning- Release of $CO _2$

  2. Nuclear power- Radioactive wastes

  3. Solar energy- Green house effect
  4. Biomass burning- Release of $CO _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Solar power is the conversion of energy from sunlight into electricity. It is a clean form of energy with zero emission of harmful gases. It decreases dependency on the burning of fossil fuels which emits greenhouse gases which contribute to the warming of the earth's surface in excess. 

A. The burning of fossil fuels is related to the release of carbon dioxide, a major greenhouse gas.
B. Nuclear power plants release radioactive wastes that contaminate the soil and water.
C. Solar energy has no contribution to the greenhouse effect.
D. Biomass burning also results in carbon dioxide emission.
Hence, the correct answer is 'Solar energy- Greenhouse effect'

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

Green house effect is due to

  1. X-rays

  2. UV rays

  3. Green rays

  4. Infra-red rays
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The greenhouse effect is the trapping of the infra-red rays that are reflected by the earth's surface by the atmospheric gases. These gases like carbon dioxide, methane, CFCs, sulphur tetrafluoride etc. are named as greenhouse gases. As a result, these rays are not reflected back to space and increase the overall temperature of the earth, called global warming. The burning of fossil fuels and deforestation are the main anthropogenic causes of the accumulation of greenhouse gases.

So, the correct answer is 'Infra-red rays'

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

One green house gas contributes $14\%$ to total global warming and another contributes $6\%$. These are respectively identified as

  1. $NO _2$ and $CO _2$
  2. CFC and $N _2O$
  3. Methane and $CO _2$

  4. Methane and CFCs
  5. CFCs and $CO _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The warming of earth's surface when sun radiations are absorbed and trapped in earth's atmosphere, is called greenhouse effect. The gases responsible for green house effect are called green house gases which trap the radiations and don't let them reflect back from the earth's surface. The green house gases are Chlorofluorocarbons (CFC's), Carbon dioxide (CO2), Methane (CH4) and Nitrous Oxide (N2O). 
The approximate percentage of different greenhouse gases in the atmosphere is:
CFCs - 14%
CO2 - 60%
‎CH4 - 20%
N2O - 6%
So, the correct answer is 'CFC and N2O'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Cattle ranches cause acute green house effect because of

  1. Methanogenic bacteria in rumen

  2. Mechanised milking practices

  3. Decomposition of organic remains in faeces

  4. Decomposition of left over fodder
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Cattle ranches are the grazing animals that are raised on a large land area. Cattles are responsible for green house effect because their rumen (stomach) contains methanogenic bacteria that produce methane gas which is a green house gas. Methane gas is released by the cattle in the atmosphere which then causes green house gas by trapping the radiations and this results in warming of earth's surface.
So, the correct answer is 'Methanogenic bacteria in rumen'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Climate of the world is threatened by

  1. Increasing amount of atmospheric $CO _2$
  2. Decreasing amount of atmospheric $CO _2$
  3. Increasing concentration of atmospheric $O _2$
  4. Decreasing amount of atmospheric $O _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon dioxide is a naturally occurring gas. It shows greenhouse effect by absorbing the the long-wavelength infra-red radiations coming from the earth's surface and preventing from leaving the atmosphere. This effect is responsible for maintaining the ambient temperature on the earth. However, due to increase in combustion of fossil fuels like petroleum and coal and excessive deforestation, the amount of carbon dioxide has increased over the past years and this has adversely affected the global temperature by raiding it. This is called global warming and is responsible for climate change. 

Hence, the correct answer is 'Increasing amount of atmospheric CO$ _{2}$'

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

Green house effect is due to.

  1. Accumulation of $O _3$ and depletion of $O _2$
  2. Accumulation of $O _3$ and $CO _2$
  3. Depletion of $CO _2$ and $O _3$

  4. Accumulation of green plants
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The Greenhouse effect is a naturally occurring phenomenon that is responsible for heating of Earth's surface and atmosphere. It takes place due to accumulation of Ozone, Carbon dioxide, N$ _2$O, CFCs and methane in excess in atmosphere.
So, the correct answer is 'Option B- Accumulation of O$ _3$ and CO$ _2$'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Identify the correct matching combination.

I II III
(a) Chernobyl Accidental leakage Radioactive waste
(b) El Nino effect Global warming Causes climate changes
(c) Chlorofluorocarbons Ozone degradation Fluorine atoms released
(d) Snow blindness UV-B radiation Inflammation of cornea

  1. a, c

  2. a, d

  3. a, b, d

  4. b, d
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The Chernobyl disaster was a catastrophic nuclear accident that occurred on 26 April 1986, in the No. 4 nuclear reactor at the Chernobyl Nuclear Power Plant, near the city of Pripyat, in the north of the Ukrainian SSR. Which resulted in accidental leakage of radioactive wastes into the surrounding atmosphere which caused a large number of loss of human life and many genetic disorders due to radioactive mutations.
  • El Niño is a climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean. El Nino is the “warm phase” of a larger phenomenon called the El Nino-Southern Oscillation (ENSO). It results in climate change.
  • Snow blindness is a painful, temporary loss of vision due to overexposure to the sun's UV -B rays. Its symptoms include inflammation of the cornea.
  • So, the correct answer is 'a,b,d'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Which of the following sectors can possibly be affected by the onset of EI-Nino?
$1$. Food processing industries
$2$. Irrigation sector
$3$. Power sector
Choose the correct answer using the codes.

  1. $1$ and $2$
  2. $2$ and $3$
  3. $1$ and $3$

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

El Niño Southern Oscillation refers to the cycle of warm and cold temperatures, as measured by sea surface temperature (SST) of the tropical central and eastern Pacific Ocean. El Niño is accompanied by high air pressure in the western Pacific and low air pressure in the eastern Pacific. These changes in tropical rainfall affect weather patterns throughout the world, particularly for the national agriculture, fishing, forestry, and energy sectors.


So the correct option is '2 and 3'.