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CLIMATE CHANGE
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CLIMATE CHANGE
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Sample CLIMATE CHANGE Questions
A preview of CLIMATE CHANGE MCQs with answers and explanations.
Q1. Which one of the following best describes the greenhouse effect?
Cooling of the Earth's surface due to atmospheric gases
Warming of the Earth's surface and lower atmosphere due to absorption and re-emission of outgoing infrared radiation by atmospheric gases
Heating of the atmosphere exclusively by solar ultraviolet radiation
Reduction of atmospheric temperature due to cloud formation
Correct Answer:
Warming of the Earth's surface and lower atmosphere due to absorption and re-emission of outgoing infrared radiation by atmospheric gases
Greenhouse gases absorb part of the infrared radiation emitted by the Earth's surface and re-emit it in different directions, including back toward the surface. This natural process helps maintain Earth's temperature.
Q2. Which one of the following is a major difference between the natural greenhouse effect and the enhanced greenhouse effect?
The natural greenhouse effect is harmful, while the enhanced effect is beneficial
The natural greenhouse effect maintains Earth's habitability, while the enhanced effect results from increased concentrations of greenhouse gases
The natural greenhouse effect occurs only over oceans
The enhanced greenhouse effect is caused exclusively by volcanic eruptions
Correct Answer:
The natural greenhouse effect maintains Earth's habitability, while the enhanced effect results from increased concentrations of greenhouse gases
The natural greenhouse effect keeps Earth warm enough to support life. Human activities have increased atmospheric concentrations of greenhouse gases, strengthening this effect and contributing to global warming.
Q3. Which one of the following is the primary source of energy driving Earth's climate system?
Geothermal energy
Solar radiation
Tidal energy
Earth's magnetic field
Correct Answer:
Solar radiation
Solar radiation is the principal external energy source for Earth's climate system. Differences in the absorption and distribution of solar energy drive atmospheric and oceanic circulation.
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