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






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






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






4. Antarctica - stratosphere - Sep-Oct






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






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

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7. In _______ - the inversions are less frequent and weaker in the Arctic.






8. Sea ice - Glaciers and Ice sheets - Alaska- ice glaciers - Greenland- ice sheets






9. 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






10. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






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






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






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






14. Volcanic eruptions - Sunspots - Wobbly Earth






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






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






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. Surface Mass Balance is of the order of _____ melting is ____ times more.






19. 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.






20. How much is the planet really warming?






21. Less frequent and weaker






22. 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






23. 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.






24. 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






25. The amount of light reflected by an object.






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






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






28. The Earth emits this.






29. Melting Point decreases






30. Really measures volume.






31. 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.






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






33. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






34. Greenhouse gases are a ___ portion of the atmosphere






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






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






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






38. Massive cooldown has allowed colder conditions to persist leading to cfcs stabilizing leading to ozone depletion. Later - more warming will lead to more moisture in the air which will lead to more snowfall!






39. Amount of light absorbed by surface






40. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






41. Amount of light absorbed by atmosphere






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






43. 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.






44. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century






45. 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






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






47. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






48. Descending Air dry - Convection cells are wet.






49. Measures input and output.






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