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. 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%






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






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






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






5. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






6. Number of days that exceed a given temperature






7. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






8. Like weighing oneself on the scale.






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






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






11. O Unfrozen soil that stays within the permafrost.






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






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






14. Measures input and output.






15. Thawing permafrost weakens coastal lands. Risk of flooding in coastal wetlands. Pollution and toxins locked in the snow and ice will be released.






16. 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






17. Refers to the irregular warming in the Sea Surface Temperatures (SST) from the coasts of Peru and Ecuador to the equatorial central Pacific - the Southern Oscillation






18. More common






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






20. In ________- inversion layer is more common in the Arctic






21. Greenhouse gases are mixed in the ____






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






23. Set up in 1988 by WMO and UNEP.






24. Absolute thresholds - Monthly maximums and minimums - Threshold departures - Percentile departure - Atmospheric Water Vapor: More water vapor in the air - warmer nights!






25. 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.






26. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






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






29. Amount of light absorbed by surface






30. 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.






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






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






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






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






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






36. Less frequent and weaker






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






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






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






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






41. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






42. Taliks are found under lakes because of the ability of water to store and vertically transfer heat energy - Vertical extent of the taliks found under lakes is related to the depth and volume of the overlying water body.






43. 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.






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






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






46. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)






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






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






49. Descending Air dry - Convection cells are wet.






50. Melting Point decreases