Test your basic knowledge |

Global Warming

Subjects : literacy, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Is not an externally imposed perturbation to the climate system.






2. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






3. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






4. CO2 GHG forcing - H2O - dominant/major GHG






5. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






6. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






7. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






8. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






9. The order of 1 m/year. Melting is ten times more.






10. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






11. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






12. A thick - floating slab of freshwater ice extending from coast to coast.






13. Reduction of snow and ice cover - Changes in atmospheric circulation.






14. Melting Point decreases






15. Total absorbed solar radiation






16. Fresh snow and snow-covered sea ice may have an albedo higher than 80% - even when melting in the summer. Sea ice has a higher albedo and can absorb as little as 10% of the solar energy. On average - sea ice albedo is around 85%






17. Water vapor - 36-70% - carbon dioxide - 9-26% - methane - 4-9% - ozone - 3-7%






18. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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19. 240 w/m squared






20. Set up in 1988 by WMO and UNEP.






21. 1.4 USA - 57 m total sea level equivalent






22. Clouds 40~90% - Vegetation 10~15%






23. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






24. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






25. Warming- positive feedback - Cooling- negative feedback.






26. he increase of ozone concentration in the atmosphere helps ____ our planet






27. A dome shaped cover of perennial ice and snow.






28. Ice sheets have a very ____ Albedo






29. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






30. A process whereby slabs of ice at the glacier margin mechanically fracture and detach from the main ice mass -






31. Refers to a body of freshwater - usually shallow - formed in a depression by melt water from thawing permafrost.






32. Troposphere - Stratosphere (Ozone Layer) - Mesosphere - Ionosphere






33. By contrast reflects only about 7% of solar radiation (Albedo~7%) - absorbing 93%.






34. Where does the ozone protect us?






35. Ozone layer in high stratosphere (25-40 km altitude) absorbs about 95-99% of ultraviolet radiation.






36. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






37. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






38. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






39. How much is the planet really warming?






40. Help darkens the snow and ice surface - increasing the amount of energy that is absorbed.






41. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






42. Radiation absorbed by atmospheric greenhouse gases?






43. Extent will increase the warming because less energy will be reflected back to the atmosphere by the ice and more will be absorbed by the ocean.






44. Prolonged period of excessively hot weather - Which may be accompanied by high humidity.






45. Antarctica - stratosphere - Sep-Oct






46. Really measures volume.






47. Ice flowing from the middle of Greenland to the edges and melting. 90 feet a day- speed that ice is moving.






48. Rainy on yearly average. In these regions - rising air predominates.






49. Unfrozen ground that is found within a mass of permafrost






50. Over the Northern Hemisphere than the tropics.