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    ESS
    Grade-9
    Easy

    Question

    Assertion: Methane is a part of greenhouse gases that contributes to approximately 20% of global warming.
    Reason: The use of multi-point fuel injection engines in automobiles has reduced the amount of methane in exhausts.

    1. Both Assertion and reason are true, and reason is the correct explanation of assertion.
    2. Both Assertion and reason are true, but reason is not the correct explanation of assertion.
    3. Assertion is true, but reason is false.
    4. Both Assertion and reason are false.

    Hint:

    Methane is a major greenhouse gas that contributes to global warming due to the way it is made up of

    The correct answer is: Both Assertion and reason are true, but reason is not the correct explanation of assertion.

      The reason is false because methane is a two element compound and has three atoms in total due to which it traps the infrared radiation that reflects from Earth and scatters it all around the Earth due to its structure

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      Statement I: The global atmosphere is currently warming.
      Statement II: The depletion of the stratospheric ozone layer has increased the amount of ultraviolet radiation reaching the earth.

      1. Statement I is correct, statement II is incorrect.
      2. Statement I and II are correct.
      3. Statement I is incorrect, statement II is correct.
      4. Statement I and II are incorrect.

      Statement I: The global atmosphere is currently warming.
      Statement II: The depletion of the stratospheric ozone layer has increased the amount of ultraviolet radiation reaching the earth.

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      1. Statement I is correct, statement II is incorrect.
      2. Statement I and II are correct.
      3. Statement I is incorrect, statement II is correct.
      4. Statement I and II are incorrect.
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      Match the following.
      1. CH4, CO2, CFC
      		 a. Hydrocarbon
      2. Methane
      		 b. Major component of climate change
      3. Nitrogen
      		 c. Ozone depletion
      4. Carbon fluorocarbon
      		 d. Most available gas

      1. 1 – b, 2 – a, 3 – d, 4 – c
      2. 1 – a, 2 – b, 3 – c, 4 – d
      3. 1 – d, 2 – c, 3 – b, 4 – a
      4. 1 – c, 2 – a, 3 – d, 4 - b

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      1. CH4, CO2, CFC
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      2. Methane
      		 b. Major component of climate change
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      2. 1 – a, 2 – b, 3 – c, 4 – d
      3. 1 – d, 2 – c, 3 – b, 4 – a
      4. 1 – c, 2 – a, 3 – d, 4 - b
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      Which of the following statements is INCORRECT?

      1. Global sea levels are rising because of climate change.
      2. More heat waves are causing due to climate change.
      3. Storms, hurricanes etc. reduced drastically due to climate change etc.
      4. Surface temperatures are increasing alarmingly because of climate change.

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      2. More heat waves are causing due to climate change.
      3. Storms, hurricanes etc. reduced drastically due to climate change etc.
      4. Surface temperatures are increasing alarmingly because of climate change.
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      Which of the following is the most likely way to help slow the greenhouse effect?

      1. Ensuring that all excess paper packaging is incinerated.
      2. Encouraging the use of private transportation rather than public transportation.
      3. Converting tropical forests into cattle grazing land.
      4. Redesigning land-fill dumps to allow for methane collection.

      Which of the following is the most likely way to help slow the greenhouse effect?

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      1. Ensuring that all excess paper packaging is incinerated.
      2. Encouraging the use of private transportation rather than public transportation.
      3. Converting tropical forests into cattle grazing land.
      4. Redesigning land-fill dumps to allow for methane collection.
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      Statement 1: The greenhouse effect is caused by a thick layer of carbon dioxide in the atmosphere.
      Statement 2: The glass panels of a greenhouse allow sunlight to pass through while preventing heat from being re-radiated into space.

      1. Statement 1 is correct but statement 2 is incorrect.
      2. Statement 1 is incorrect but statement 2 is correct.
      3. Both the statements are correct.
      4. Both the statements are incorrect

      Statement 1: The greenhouse effect is caused by a thick layer of carbon dioxide in the atmosphere.
      Statement 2: The glass panels of a greenhouse allow sunlight to pass through while preventing heat from being re-radiated into space.

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      1. Statement 1 is correct but statement 2 is incorrect.
      2. Statement 1 is incorrect but statement 2 is correct.
      3. Both the statements are correct.
      4. Both the statements are incorrect
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      Assertion (A) The presence of green plants is required for the greenhouse effect.
      Reason (R) Green plants' chlorophyll causes the greenhouse effect.

      1. Both assertion and reason are true, and reason is the correct explanation of assertion.
      2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
      3. Assertion is true, but reason is false.
      4. Both Assertion and reason are false.

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      1. Both assertion and reason are true, and reason is the correct explanation of assertion.
      2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
      3. Assertion is true, but reason is false.
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      Read the following statements.
      Select the strongest evidence for climate change.
      1. A colder than normal winter.
      2. A warmer than normal summer.
      3. A pattern of severe storms affecting the major cities in winter season.
      4. A form of rising frequency and intensity of storms over many years.

      1. 1 and 3
      2. 1, 2 and 4
      3. Only 2 and 4
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      Read the following statements.
      Select the strongest evidence for climate change.
      1. A colder than normal winter.
      2. A warmer than normal summer.
      3. A pattern of severe storms affecting the major cities in winter season.
      4. A form of rising frequency and intensity of storms over many years.

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      1. 1 and 3
      2. 1, 2 and 4
      3. Only 2 and 4
      4. Only 4
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      Greenhouse gases are so-called because _________.

      1. They prevents heat waves from escaping from the earth's surface
      2. They are grown in greenhouses
      3. They are used to warm plant growth chambers
      4. They contribute to the maintenance of atmospheric oxygen and carbon dioxide balance

      Greenhouse gases are so-called because _________.

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      1. They prevents heat waves from escaping from the earth's surface
      2. They are grown in greenhouses
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      4. They contribute to the maintenance of atmospheric oxygen and carbon dioxide balance
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      Pick odd one out.

      1. CH4
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      3. CFC

      4. C2H2

      Pick odd one out.

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      1. CH4
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      3. CFC

      4. C2H2
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      Though greenhouse effect is natural but still today’s climate change has become a serious problem. Why?

      1. Because unexpected changes to the climate system may have accidental outcomes that may cause challenges for societies.

      2. Because humans have modified a natural method and exaggerated changes that might normally happen over millions of years. 

      3. Because once greenhouse gases released into the atmosphere, they remain effective for many years, making it hard to reverse the process.

      4. Because a small increase in greenhouse gas concentration can have a great impact on rise in temperatures.

      Though greenhouse effect is natural but still today’s climate change has become a serious problem. Why?

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      1. Because unexpected changes to the climate system may have accidental outcomes that may cause challenges for societies.

      2. Because humans have modified a natural method and exaggerated changes that might normally happen over millions of years. 

      3. Because once greenhouse gases released into the atmosphere, they remain effective for many years, making it hard to reverse the process.

      4. Because a small increase in greenhouse gas concentration can have a great impact on rise in temperatures.
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      ESS

      What will happen to the climate, if we stop burning of fossil fuels today?

      1. Earth's normal temperature would continue to increase.
      2. Temperatures would remain to warm, then start to cool down in 100 years or more.
      3. Temperatures would keep on fluctuating but continue to be the same on an average.
      4. Temperatures will not be rising once greenhouse gas concentrations stopped rising.

      What will happen to the climate, if we stop burning of fossil fuels today?

      ESSGrade-9
      1. Earth's normal temperature would continue to increase.
      2. Temperatures would remain to warm, then start to cool down in 100 years or more.
      3. Temperatures would keep on fluctuating but continue to be the same on an average.
      4. Temperatures will not be rising once greenhouse gas concentrations stopped rising.
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      The normal temperature of the Earth would have been_____________ if greenhouse gases were not present in the atmosphere.

      1. 33ﹾC less than the current average
      2. 33ﹾC more than the current average
      3. 18ﹾC less than the current average
      4. 15ﹾC less than the current average temperature

      The normal temperature of the Earth would have been_____________ if greenhouse gases were not present in the atmosphere.

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      1. 33ﹾC less than the current average
      2. 33ﹾC more than the current average
      3. 18ﹾC less than the current average
      4. 15ﹾC less than the current average temperature
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      Grade-9
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      Global warming can be under control _____________.

      1. By reducing reforestation and increasing the use of fossil fuel
      2. By increasing deforestation and slowing down the growth of human population

        By increasing deforestation and decreasing efficiency of energy usage  

      3. By increasing deforestation and decreasing efficiency of energy usage
      4. By reducing deforestation and cutting down use of fossil fuel

      Global warming can be under control _____________.

      ESSGrade-9
      1. By reducing reforestation and increasing the use of fossil fuel
      2. By increasing deforestation and slowing down the growth of human population

        By increasing deforestation and decreasing efficiency of energy usage  

      3. By increasing deforestation and decreasing efficiency of energy usage
      4. By reducing deforestation and cutting down use of fossil fuel
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      ESS

      Assertion: CO2 is a major greenhouse gas.
      Reason: Increase in CO2 level leads to decrease in Earth’s temperature.

      1. If both assertion and reason are true and reason is the correct explanation of assertion.
      2. Both assertion and reason are true, but reason is not the correct explanation of assertion. 
      3. Assertion is true, but reason is false.
      4. Assertion is false, but reason is true.

      Assertion: CO2 is a major greenhouse gas.
      Reason: Increase in CO2 level leads to decrease in Earth’s temperature.

      ESSGrade-9
      1. If both assertion and reason are true and reason is the correct explanation of assertion.
      2. Both assertion and reason are true, but reason is not the correct explanation of assertion. 
      3. Assertion is true, but reason is false.
      4. Assertion is false, but reason is true.
      Grade-9
      ESS

      Climate model is used to forecast____________.

      1. Local air movement
      2. Coverage of ice on land
      3. Ocean temperature
      4. All of these

      Climate model is used to forecast____________.

      ESSGrade-9
      1. Local air movement
      2. Coverage of ice on land
      3. Ocean temperature
      4. All of these
      parallel

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