ESS
Grade-9
Easy
Question
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.
- Statement I is correct, statement II is incorrect.
- Statement I and II are correct.
- Statement I is incorrect, statement II is correct.
- Statement I and II are incorrect.
Hint:
The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases.
The correct answer is: Statement I and II are correct.
- Since the pre-industrial period, human activities are estimated to have increased Earth's global average temperature by about 1 degree Celsius (1.8 degrees Fahrenheit), a number that is currently increasing by more than 0.2 degrees Celsius (0.36 degrees Fahrenheit) per decade.
- The depletion of the ozone layer leads, on the average, to an increase in ground-level ultraviolet radiation, because ozone is an effective absorber of ultraviolet radiation. The Sun emits radiation over a wide range of energies, with about 2% in the form of high-energy, ultraviolet (UV) radiation.
- So both are correct
Related Questions to study
ESS
Match the following.
| 1. Carbon dioxide |
a. Hydrocarbon |
| 2. Methane |
b. Major component of climate change |
| 3. Carbon monoxide |
c. It’s a poisonous gas |
| 4. Carbon fluorocarbon |
d. Causes ozone depletion |
Match the following.
| 1. Carbon dioxide |
a. Hydrocarbon |
| 2. Methane |
b. Major component of climate change |
| 3. Carbon monoxide |
c. It’s a poisonous gas |
| 4. Carbon fluorocarbon |
d. Causes ozone depletion |
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Assertion [A]: Deforestation is one key factor adding to global warming.
Reason [R]: Moreover, CO2, methane and CFCs are also greenhouse gases.
Assertion [A]: Deforestation is one key factor adding to global warming.
Reason [R]: Moreover, CO2, methane and CFCs are also greenhouse gases.
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The spatial coverage of sea ice will decrease as carbon dioxide levels rise. As a result, the reduced sea ice extent is a ________.
The spatial coverage of sea ice will decrease as carbon dioxide levels rise. As a result, the reduced sea ice extent is a ________.
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________ has the least effect of climate change in forests.
________ has the least effect of climate change in forests.
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________ is the strongest evidence for climate change.
________ is the strongest evidence for climate change.
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How do low clouds trigger the surface temperature on average (in comparison to a clear sky)?
How do low clouds trigger the surface temperature on average (in comparison to a clear sky)?
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________ gas does not add to the global warming.
________ gas does not add to the global warming.
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Climate model is used to forecast ________.
Climate model is used to forecast ________.
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Which one is not a suitable option if we are aiming to reduce global warming?
Which one is not a suitable option if we are aiming to reduce global warming?
ESSGrade-9
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Select the incorrect statement.
Select the incorrect statement.
ESSGrade-9
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Greenhouse effect is ______.
Greenhouse effect is ______.
ESSGrade-9
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_______ is not a CO2 emitter.
_______ is not a CO2 emitter.
ESSGrade-9
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_________ is mainly responsible for greenhouse gas effect.
_________ is mainly responsible for greenhouse gas effect.
ESSGrade-9
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_________ do not produce carbon dioxide.
_________ do not produce carbon dioxide.
ESSGrade-9
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_________ is not a greenhouse gas.
_________ is not a greenhouse gas.
ESSGrade-9
