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. 85%






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






3. 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






4. Forms from frozen ocean water - Floats on the ocean surface - Grows over the winter - melts in the summer






5. O Climate change in the Arctic is occurring now - Changes have been huge already






6. 10 : 1 - grounding ; surface






7. Most of the deserts are around 30 N and 30 S - where sinking air predominates






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






9. Less frequent and weaker






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






11. Over the past century what has happened to the Earth's temperature?






12. High vs low






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






14. Total absorbed solar radiation






15. Volcanic eruptions - Sunspots - Wobbly Earth






16. Nitrogen (N2 78%) and Oxygen (O2 21%) - Their linear 2 atom molecular structure






17. Number of days that exceed a given temperature






18. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






19. Positive Albedo Feedback - increase in temperature melts ice and snow reduces albedo increases temperature melts ice and snow reduces albedo... ETC






20. Water vapor means more water up in the clouds and less in the ground!






21. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






22. Tundra absorbs more energy than ice and snow but less than scrubs and forest - and with those plants migrating towards the north - they will further contribute ot absorb more energy.






23. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






24. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






25. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






26. Is not an externally imposed perturbation to the climate system.






27. High cloud has a _____ effect and cool cloud has a ____ effect






28. High clouds are a ____ feedback; larger greenhouse warming - Clouds reflect shortwave radiation but also absorb longwave radiation






29. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century






30. The Earth emits this.






31. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






32. The last portion of a glacier grounded to bedrock - after this line there are ice shelves.






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






34. Reduction of Summer Sea- 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 - Snow and snow covered ice absorb 15% of incident solar energy - Ice absorbs 10% of inc






35. Precipitation intensity will rise ___ for every 1 OC of warming.






36. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






37. Average molecular life span is less than 10 years - Major sources: Wetlands and oceans - Raising cattle and landfills.






38. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






39. In troposphere = greenhouse warming gas - However - most of it is in the stratosphere.






40. 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.






41. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






42. Changes over time in the highest and lowest single temperature observed during a given month of the year.






43. Set up in 1988 by WMO and UNEP.






44. LW - SW - 55% absorbed by surface






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






46. On a clear cold day - the thin layer of air hugging the ground is called inversion. This layer is much cooler than the air a few hundred meters above it.






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






48. All processes that add snow or ice to a glacier or to flowing ice or snow cover.






49. The last portion of a glacier grounded to bedrock - after this line there are ice shelves.






50. Longwave radiation - any radiation with a long wave will heat up quickly.