Greenhouse Gases

1. What is the primary source of methane emissions?

A) Industrial processes
B) Transportation
C) Agriculture
D) Deforestation

2. Which greenhouse gas is known for its strong heat-trapping ability?

A) Carbon dioxide
B) Chlorofluorocarbons
C) Methane
D) Nitrous oxide

3. In what way do greenhouse gases contribute to global warming?

A) By reducing the Earth's magnetic field
B) By reflecting sunlight away from Earth
C) By causing the ozone layer to thicken
D) By trapping heat in the atmosphere

4. Which human activity has led to an increase in atmospheric carbon dioxide levels?

A) Reducing meat consumption
B) Recycling
C) Building wind turbines
D) Burning of fossil fuels

5. What role does water vapor play in the greenhouse effect?

A) It amplifies the warming effect of other greenhouse gases
B) It prevents the penetration of harmful UV rays
C) It absorbs excess heat from the atmosphere
D) It creates a cooling effect in the upper atmosphere

6. What is the greenhouse effect?

A) The cooling effect caused by green rooftops
B) The formation of clouds in the sky
C) The process of plants absorbing carbon dioxide
D) The process by which greenhouse gases trap heat in Earth's atmosphere

7. What is one natural source of methane emissions?

A) Agricultural practices
B) Industrial processes
C) Burning fossil fuels
D) Wetlands

8. What is the main consequence of elevated levels of greenhouse gases in the atmosphere?

A) Global warming
B) Cooling of the Earth's surface
C) Higher levels of oxygen
D) Increased ozone depletion

9. Which greenhouse gas is most responsible for the ozone hole over Antarctica?

A) Chlorofluorocarbons
B) Nitrogen oxide
C) Carbon dioxide
D) Methane

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