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 heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.






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






3. ~15% of incident solar energy (albedo 85)






4. 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.






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






6. CO2 - CH4 - O3 - H2O - N2O - CFCs






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






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






9. 10 : 1 - grounding ; surface






10. Warming- positive feedback - Cooling- negative feedback.






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






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






13. When meltwater seeps through a flowing glacier - it can lubricate the base and hasten the glacier's seaward flow.






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






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






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






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






18. Where does the ozone protect us?






19. Ocean retains ____ CO2






20. 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






21. Radiation that comes from the Sun - Visible light - 'near infrared' - ultraviolet radiation.






22. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






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






24. More common






25. Less frequent and weaker






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






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






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






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






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






31. How often does El Nio occur?






32. 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






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






34. O Unfrozen soil that stays within the permafrost.






35. Where do greenhouse gases warm up the Earth?






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






37. At the bottom of the ice sheets the temperature doesn't necessarily have to be above 0... it could _____ more easily because of the water






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






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






40. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






41. Sea ice - Continental ice sheets - Permafrost (frozen soil) - Mountain glaciers - Snow cover






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






43. Total absorbed solar radiation






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






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






46. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






47. Over the Northern Hemisphere than the tropics.






48. 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.






49. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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