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. 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.






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






3. 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.






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






5. All processes that add snow or ice to a glacier or to flowing ice or snow cover.






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






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






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






9. 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






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






11. Floating extensions are ice shelves - rivers of ice are ice streams or outlet glaciers - the junctions with the ocean are called the grounding line.






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






13. 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.






14. South polar vortex - Temperatures drop below 80O Celsius in the lower stratosphere - At these temperatures the chemicals in the stratosphere freeze and form Polar Stratospheric Clouds (PSCS) - These increase the concentration of CFCs in turn destroyi






15. High vs low






16. 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






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






18. 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.






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






20. 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!






21. Warming- positive feedback - Cooling- negative feedback.






22. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






23. Occurs when there is not enough water available for a particular crop to grow at a particular time.Typically seen after!meteorological drought (when rainfall decreases) but before a hydrological drought






24. 1. Keeps the ocean and the earth cooler 2. Coastal impacts of ice: prevents waves from eroding coastlines and protects from storms. 3. Ecological importance of ice: a. Most visibly for the many fish - birds - and mammal species that live in - on - or






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






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






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






28. Cooler water and drought conditions.






29. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






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






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






32. Antarctica - stratosphere - Sep-Oct






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






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






35. 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.






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






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






38. Where do greenhouse gases warm up the Earth?






39. Nitrogen (N2 78%) and Oxygen (O2 21%) - Their linear 2 atom molecular structure






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






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






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






43. Betts et al found that: if CO-2 __________ this has a physiological effect on plant transpiration increased simulated runoff by 6% b. How? i. More CO2 1. Plants pores open less 2. This reduces transpiration 3. More water in the land surface






44. 1.4 USA - 57 m total sea level equivalent






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






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






47. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






48. Land Based Ecosystems retain ____ CO2.






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






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

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