Climate change: evidence, causes and human impacts. - One Line Questions

1. The phenomenon where warming temperatures lead to increased water vapor in the atmosphere, which is a greenhouse gas, is an example of: — A positive feedback loop
2. Aerosols in the atmosphere can have a net cooling effect on the climate by: — Scattering and reflecting solar radiation
3. The term 'climate mitigation' refers to: — Reducing the sources or enhancing the sinks of greenhouse gases
4. Which evidence directly links human activities to increased atmospheric CO2 concentrations? — Analysis of ice cores showing isotopic ratios of carbon
5. Which of the following is a primary evidence for past climate change from ice core data? — Analysis of trapped air bubbles containing greenhouse gas concentrations
6. What is the primary source of nitrous oxide (N2O) emissions from human activities? — Agricultural soil management and livestock
7. Which gas is responsible for the depletion of the ozone layer, a separate environmental issue from climate change? — Chlorofluorocarbons (CFCs)
8. Which sector is a major contributor to methane (CH4) emissions? — Rice cultivation and livestock farming
9. Which type of cloud is most associated with reflecting incoming solar radiation and potentially having a cooling effect on the climate? — Stratus clouds
10. The term 'anthropogenic' climate change refers to: — Climate change caused by human activities
11. The 'greenhouse effect' is a natural process that: — Warms the planet by trapping outgoing infrared radiation
12. Which of the following is a potential impact of climate change on human migration? — Increased climate-induced migration due to resource scarcity and extreme events
13. Which of the following is a potential human health impact of climate change? — Increased spread of heat-related illnesses and certain infectious diseases
14. The Kyoto Protocol aimed to: — Limit greenhouse gas emissions from developed countries
15. Which sector is a major source of agricultural greenhouse gas emissions, particularly methane and nitrous oxide? — Fertilizer application and livestock digestion
16. The Intergovernmental Panel on Climate Change (IPCC) provides: — Scientific assessments on climate change
17. The concept of 'climate tipping points' refers to: — Thresholds beyond which certain impacts or changes in the climate system become irreversible
18. Which of the following is a significant indirect impact of climate change on human societies? — Potential for increased conflict over scarce resources
19. Deforestation contributes to climate change primarily through: — Reduced absorption of CO2
20. Which of the following is a positive feedback mechanism in the climate system that can amplify warming? — Melting permafrost releasing methane
21. Which of the following is a significant impact of climate change on agriculture? — Shifts in growing seasons and geographical suitability of crops
22. Which of the following is a primary indicator of current climate change? — Rising global average temperatures
23. Which of the following is a major consequence of climate change for coastal communities? — Coastal erosion and inundation due to sea-level rise
24. Which of the following is a direct impact of climate change on biodiversity? — Species range shifts and potential extinctions
25. Ocean acidification is a direct consequence of: — Absorption of excess atmospheric CO2 by the oceans
26. The observed increase in global average sea level is attributed to: — Thermal expansion of seawater and melting of land ice
27. Ocean warming contributes to sea-level rise primarily through: — Thermal expansion of seawater
28. The impact of climate change on water resources includes: — Changes in the timing and availability of water due to altered precipitation and snowmelt
29. Which of the following is a proposed geoengineering technique to combat climate change? — Solar radiation management (e.g., stratospheric aerosol injection)
30. The melting of mountain glaciers can lead to: — Reduced water availability for regions dependent on glacial meltwater
31. The reduction in Arctic sea ice extent is significant because it: — Amplifies warming due to reduced albedo (ice-albedo feedback)
32. Which human activity is the largest source of anthropogenic greenhouse gas emissions globally? — Burning of fossil fuels for energy
33. Which greenhouse gas is the most significant contributor to anthropogenic climate change due to its abundance and atmospheric lifetime? — Carbon Dioxide (CO2)
34. Industrial processes, such as cement manufacturing, are a significant source of which greenhouse gas? — Carbon Dioxide (CO2)
35. The increase in extreme weather events, such as heatwaves and heavy rainfall, is considered a consequence of: — Anthropogenic climate change
36. The increased frequency and intensity of heatwaves are a direct manifestation of: — Anthropogenic global warming
37. Coral bleaching is primarily caused by: — Rising sea surface temperatures
38. The phenomenon of 'permafrost thaw' is concerning because it can release: — Large amounts of stored carbon as CO2 and methane
39. Which of the following is a key evidence for current climate change from instrumental records? — Measurements of atmospheric CO2 concentration
40. The role of oceans as a 'carbon sink' means they: — Absorb a significant portion of atmospheric CO2
41. The Montreal Protocol is an international treaty designed to: — Protect the ozone layer by phasing out ozone-depleting substances
42. The concept of 'climate adaptation' refers to: — Adjusting to actual or expected future climate
43. Which of the following is a paleoclimate proxy used to reconstruct past temperatures? — Dendrochronology (tree rings)
44. The 'hockey stick graph' primarily illustrates trends in which climatic variable over the past millennium? — Global average temperature
45. The term 'climate resilience' refers to: — The ability of a system to anticipate, absorb, accommodate, or recover from the effects of climate change
46. The warming of the Arctic region at a rate faster than the global average is known as: — The Polar Amplification
47. Which international agreement, adopted in 2015, aims to limit global warming to well below 2, preferably to 1.5 degrees Celsius, compared to pre-industrial levels? — The Paris Agreement
48. The concept of 'climate forcing' refers to: — The influence of human activities on the climate system
49. The melting of glaciers and ice sheets contributes to sea-level rise by: — Addition of freshwater to the oceans
50. Which of the following is considered a non-CO2 greenhouse gas with a much higher global warming potential per molecule than CO2? — Methane
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