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






2. 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.






3. Land Based Ecosystems retain ____ CO2.






4. 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






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






6. The high pressure decreases the melting point and favors melting - Melt water being less dense rises along the water column along the ice shelf bottom and may either escape the cavity or refreeze at some intermediate depth. Melting point decreases:






7. 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






8. 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.






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






10. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






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






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






13. 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.






14. Really measures volume.






15. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






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






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






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






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






20. Amount of light absorbed by surface






21. 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






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






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






24. Less frequent and weaker






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






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






27. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






28. High vs low






29. 1.4 USA - 57 m total sea level equivalent






30. 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%






31. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






32. 240 w/m squared






33. 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!






34. Like weighing oneself on the scale.






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






36. The amount of light reflected by an object.






37. Ocean retains ____ CO2






38. Radiation absorbed by atmospheric greenhouse gases?






39. 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






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






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






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






43. 10 : 1 - grounding ; surface






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






45. 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






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






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






48. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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49. 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






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