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






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






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






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






5. 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.






6. Greenhouse gases are a ___ portion of the atmosphere






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






8. The past climate...for this reason - both keep good records of climate change.






9. Radiation absorbed by atmospheric greenhouse gases?






10. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






11. Permafrost- A frozen soil






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






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






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






15. Forms in a mosaic of favoured locations.






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






17. 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






18. Melting Point decreases






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






20. How much is the planet really warming?






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






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






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






24. Descending Air dry - Convection cells are wet.






25. The Earth emits this.






26. 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) -






27. 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






28. The amount of light reflected by an object.






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






30. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






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






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






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. Less frequent and weaker






36. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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






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






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






40. How often does El Nio occur?






41. 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.






42. Amount of light absorbed by surface






43. Where do greenhouse gases warm up the Earth?






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






45. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






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






47. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






48. Warming- positive feedback - Cooling- negative feedback.






49. 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






50. 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.







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