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. Land Based Ecosystems retain ____ CO2.






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






3. 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






4. 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






5. LW - SW - 55% absorbed by surface






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






7. High vs low






8. Same as heating an apartment v home - Thinner atmosphere than tropics; warms faster.






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






10. Greenhouse gases are a ___ portion of the atmosphere






11. ~15% of incident solar energy (albedo 85)






12. 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.






13. Where does the ozone protect us?






14. Unfrozen ground that is found within a mass of permafrost






15. Number of days that exceed a given temperature






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






17. 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






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






19. Descending Air dry - Convection cells are wet.






20. Amount of light absorbed by atmosphere






21. Over the Northern Hemisphere than the tropics.






22. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






23. O The amount of energy moving in the form of photons or other elementary particles at a certain distance from the source per unit of area per second. Area/second






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

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25. Thawing permafrost weakens coastal lands. Risk of flooding in coastal wetlands. Pollution and toxins locked in the snow and ice will be released.






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






27. Measures input and output.






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






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






30. 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






31. 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






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






33. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






34. Permafrost- A frozen soil






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






36. 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.






37. The buoyant force is equal to the weight of the displaced water.

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38. 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






39. 10 : 1 - grounding ; surface






40. Ice sheets have a very ____ Albedo






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






42. Cooler water and drought conditions.






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






44. Melting Point decreases






45. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






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






47. Like weighing oneself on the scale.






48. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






49. 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%






50. ~10% of incident solar energy (albedo 90)