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. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






2. Surface Mass Balance is of the order of _____ melting is ____ times more.






3. Over the Northern Hemisphere than the tropics.






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






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






6. Less frequent and weaker






7. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






8. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






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






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






11. What can cause a change in the Earth's climate balance?






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






13. Top layer of soil that thaws during the summer and freezes again during autumn. - Between 1 and 3 m thick.






14. Closed talik can develop when lakes fill in with sediment and become deposits of dead plant material (bog).






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






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






17. Ice melting rapidly? What type causes sea level to rise? What have been the main contributors to sea level rise so far? What are the impacts of melting ice? - On nature - On humans






18. Floating extensions are ice shelves - rivers of ice are ice streams or outlet glaciers - the junctions with the ocean are called the grounding line.






19. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






20. Cooler water and drought conditions.






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






22. Summer increase in cloud cover - Winter decrease in cloud cover.

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23. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






24. Like weighing oneself on the scale.






25. Low clouds are a ____ feedback; they will reflect more sunlight. Clouds reflect shortwave radiation but also absorb longwave radiation






26. South polar vortex - Temperatures drop below 80O Celsius in the lower stratosphere - At these temperatures the chemicals in the stratosphere freeze and form Polar Stratospheric Clouds (PSCS) - These increase the concentration of CFCs in turn destroyi






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






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






29. Higher temperature increases atmospheric water vapor @ global scale more water vapor in the air that causes nights to stay warmer.






30. O Unfrozen soil that stays within the permafrost.






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






32. Under higher pressure the melting point decreases ____ - The pressure comes from the weight of the ice shelf.






33. 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.






34. Frozen +2 years - Few centimeters to 1500 m






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






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






37. 10 : 1 - grounding ; surface






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






39. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






40. The large-scale ocean circulation that moves water between the deep and surface ocean which effects salinity and temperature change - Supplies heat to the polar-regions.






41. Number of days when temperatures climb above average by a fixed amount.






42. In average: +1% in respect to 100 years ago.






43. LW - SW - 55% absorbed by surface






44. Amount of light absorbed by surface






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






46. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






47. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






48. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






49. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






50. ~15% of incident solar energy (albedo 85)







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