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. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






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






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






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






5. Greenhouse gases are mixed in the ____






6. 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.






7. Over the Northern Hemisphere than the tropics.






8. Antarctica - stratosphere - Sep-Oct






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






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






11. 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.






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






13. 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%






14. Volcanic eruptions - Sunspots - Wobbly Earth






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






16. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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






18. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






19. Greenhouse gases are a ___ portion of the atmosphere






20. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






21. 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.






22. Less frequent and weaker






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






24. Ocean retains ____ CO2






25. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






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






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






28. 10 : 1 - grounding ; surface






29. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






30. 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






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






32. Amount of light absorbed by surface






33. Changes over time in the highest and lowest single temperature observed during a given month of the year.






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






35. High vs low






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






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






38. The amount of light reflected by an object.






39. Radiation absorbed by atmospheric greenhouse gases?






40. 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.






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






42. 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.






43. 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






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






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






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






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






48. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






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






50. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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