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






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






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






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






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






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






7. Descending Air dry - Convection cells are wet.






8. Total absorbed solar radiation






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






10. 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.






11. 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






12. Number of days that land among the hottest of all days in that month's long-term record.






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






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






15. O Unfrozen soil that stays within the permafrost.






16. Permafrost- A frozen soil






17. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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






19. Measures input and output.






20. Like weighing oneself on the scale.






21. Melting Point decreases






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

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23. 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.






24. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






25. 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) -






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






27. Refers to a body of freshwater - usually shallow - formed in a depression by melt water from thawing permafrost.






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






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






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






31. x7 smaller - 7m total sea level equivalent.






32. Long time series started in the '70s and yielding good data in the '90s - Detects elevation with high accuracy: 10 cm precision (laser) to 1 m (radar) - 2/3 Gravity Surveys (GRACE) - Weighing the total mass every 30 days - Direct monthly estimate






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






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






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






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






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






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






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






40. 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






41. Land Based Ecosystems retain ____ CO2.






42. ~10% of incident solar energy (albedo 90)






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. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






45. Volcanic eruptions - Sunspots - Wobbly Earth






46. 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.






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






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






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






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