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






2. Where does the ozone protect us?






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






4. Greenhouse gases are mixed in the ____






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






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






7. Permafrost- A frozen soil






8. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






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






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






11. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






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






13. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






14. 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.






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






16. Laser radar - H V - Long time series - high accuracy - Density






17. Amount of light absorbed by atmosphere






18. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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






20. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






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






22. Greenhouse gases are a ___ portion of the atmosphere






23. Ozone layer in high stratosphere (25-40 km altitude) absorbs about 95-99% of ultraviolet radiation.






24. High vs low






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






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






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






28. Cooler water and drought conditions.






29. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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

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31. More common






32. 10 : 1 - grounding ; surface






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






34. 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.






35. Grace - Tells us how much mass change we have - M - This is the measure of gravity (gives us the mass) - Directly measure mass change - Poor resolution






36. Like weighing oneself on the scale.






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






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






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






40. Warming- positive feedback - Cooling- negative feedback.






41. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






44. Industrial product - 300 ppb (parts per billion)






45. 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






46. 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.






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






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






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






50. 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