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






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






3. 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






4. The buoyant force is equal to the weight of the displaced water.


5. Is best viewed as a combination of...- Natural Variability - Associated with atmospheric circulation patterns - Growing Radiative Forcing - Associated with rising concentrations of atmospheric greenhouse gases - Strongly suggests a human influence.






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






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






8. 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.






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






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






11. Same as heating an apartment v home - Thinner atmosphere than tropics; warms faster.






12. Really measures volume.






13. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






14. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






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






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






17. Sea ice extent in Antarctica is rapidly reducing. Seasonal variability. People - Animals and Ice






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






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






20. Same amount of H2O - Mass does not change - Density of ice < density of water - Volume of ice > volume of water






21. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






22. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv






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






25. Atmospheric Cooling - Both negative (stabilizing) feedbacks - It is not happening now - but it has happened in the past - Ice-albedo feedback was the dominant feedback during the ice ages.






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






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






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






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






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






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






32. Amount of light absorbed by surface






33. Carbon dioxide - Methane - Ozone - Water Vapor - Few others - Most ___________________ are mixed in the troposphere (Except water vapor) - Water vapor is concentrated closer to the ground.






34. Like weighing oneself on the scale.






35. SMB- mass balance due to processes that affect the surface of the ice sheet. Precipitation- evapotranspiration-runoff-blowing snow etc.






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






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






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






39. 1. Land usage changes 2. Seasonal timing 3. Rising CO2 levels may be a factor






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






41. 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






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






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






44. ~10% of incident solar energy (albedo 90)






45. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






46. O Unfrozen soil that stays within the permafrost.






47. Total absorbed solar radiation






48. The land-surface configuration that results from the melting of ground ice in a region where permafrost degrades is called Thermokarst.






49. Descending Air dry - Convection cells are wet.






50. The major distinction between the Protocol and the Convention is that while the Convention encouraged industrialized countries to stabilize GHG emissions - the Protocol commits them to do so.