Questions on Global Warming (Ecology)
Multiple-Choice Questions: Global Warming (Ecology)
1. What is global warming?
A) The cooling of Earth's atmosphere due to volcanic activity
B) A short-term weather condition
C) The long-term rise in Earth's average surface temperature
D) A decrease in solar radiation
E) The natural cycle of ice ages
2. Which gas is the most significant contributor to global warming?
A) Oxygen (O₂)
B) Carbon dioxide (CO₂)
C) Nitrogen (N₂)
D) Argon (Ar)
E) Helium (He)
3. What is the greenhouse effect?
A) The loss of heat from Earth to space
B) A method of plant cultivation
C) The trapping of heat in Earth's atmosphere by greenhouse gases
D) A weather event caused by humidity
E) The reflection of sunlight by oceans
4. Which of the following is a greenhouse gas?
A) Carbon dioxide
B) Oxygen
C) Hydrogen
D) Neon
E) Nitrogen
5. The main cause of increased greenhouse gases in the atmosphere is:
A) Photosynthesis
B) Ocean currents
C) Burning fossil fuels
D) Lunar cycles
E) Wind patterns
6. What is a consequence of global warming?
A) Stabilized sea levels
B) Expansion of polar ice
C) Rising global temperatures and sea levels
D) Decrease in carbon dioxide levels
E) Increase in Arctic wildlife
7. Melting glaciers contribute directly to:
A) Increased crop production
B) Higher sea levels
C) More snowfall
D) Larger deserts
E) Ozone layer thickening
8. Which human activity contributes most to global warming?
A) Reading books
B) Using renewable energy
C) Burning coal and oil
D) Taking public transport
E) Recycling
9. What is the role of deforestation in global warming?
A) It reduces biodiversity only
B) It lowers ocean temperatures
C) It decreases the absorption of CO₂ by trees
D) It increases oxygen levels
E) It promotes soil fertility
10. Which sector emits the most CO₂ globally?
A) Agriculture
B) Fashion industry
C) Energy production (electricity and heat)
D) Tourism
E) Mining
11. The term "climate change" refers to:
A) Random weather events
B) Natural planetary motion
C) Long-term shifts in temperatures and weather patterns
D) Cloud formation
E) Solar eclipse cycles
12. A direct effect of global warming on ecosystems is:
A) Stabilization of food chains
B) Migration and extinction of species
C) Decrease in solar radiation
D) Higher productivity of all plants
E) Increased rainfall in all regions
13. Which international agreement aims to combat global warming?
A) Geneva Convention
B) Montreal Protocol
C) Paris Agreement
D) NATO Treaty
E) Basel Convention
14. What is the albedo effect in relation to global warming?
A) The absorption of heat by soil
B) The ability of Earth’s surface to reflect sunlight
C) The trapping of gases in the stratosphere
D) The movement of tectonic plates
E) The warming of ocean water
15. A positive feedback loop in climate science is:
A) A process that reverses warming
B) A cooling mechanism in the Arctic
C) A process that amplifies the effects of global warming
D) A system that blocks UV radiation
E) A chemical reaction that removes CO₂
16. The warming of oceans due to climate change leads to:
A) Decrease in storm activity
B) Increase in coral bleaching
C) More ice formation
D) Reduced evaporation
E) Growth of polar ice caps
17. Which of the following is a renewable energy source that helps reduce global warming?
A) Coal
B) Oil
C) Natural gas
D) Wind energy
E) Diesel
18. The permafrost melting due to global warming is dangerous because:
A) It reduces rainfall
B) It releases methane, a potent greenhouse gas
C) It increases UV radiation
D) It blocks ocean currents
E) It absorbs solar radiation
19. The carbon footprint of an individual refers to:
A) The number of trees planted
B) The size of their house
C) The amount of CO₂ emissions they are responsible for
D) The number of flights taken
E) The quality of air they breathe
20. Which of the following helps reduce global warming?
A) Using plastic bags
B) Driving alone in cars
C) Burning fossil fuels
D) Using energy-efficient appliances
E) Increasing meat consumption
Answer Key with Explanations
1. C – Global warming is the long-term rise in Earth's average surface temperature.
2. B – Carbon dioxide is the most significant human-produced greenhouse gas.
3. C – The greenhouse effect is the trapping of heat by gases like CO₂, CH₄, and water vapor.
4. A – CO₂ is one of the primary greenhouse gases.
5. C – Burning coal, oil, and gas releases massive amounts of greenhouse gases.
6. C – Global warming causes temperature rise and sea level increase.
7. B – Melting glaciers add more water to the oceans, raising sea levels.
8. C – Fossil fuel combustion is the largest contributor to global warming.
9. C – Fewer trees mean less CO₂ is absorbed from the atmosphere.
10. C – Energy production is the leading source of CO₂ emissions globally.
11. C – Climate change refers to long-term changes in climate patterns.
12. B – Many species must migrate or face extinction due to changing climates.
13. C – The Paris Agreement aims to limit global temperature rise.
14. B – Albedo measures how much sunlight is reflected by Earth’s surface.
15. C – A positive feedback loop enhances warming, e.g., ice melt lowers albedo.
16. B – Warmer oceans bleach coral and damage marine ecosystems.
17. D – Wind is a clean, renewable energy source.
18. B – Permafrost contains methane, which is released as it thaws.
19. C – Carbon footprint measures personal or group CO₂ emissions.
20. D – Using efficient appliances cuts energy use and emissions.
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