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






2. Water vapor means more water up in the clouds and less in the ground!






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






4. Greenhouse gases are mixed in the ____






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






6. Heat is provided by outside sources that flow down the continental slope to reach the deepest part of the glacier. High pressure decreases the melting point and favors melting.






7. Really measures volume.






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






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






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






11. Number of days that exceed a given temperature






12. Forms in a mosaic of favoured locations.






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






14. 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.






15. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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16. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv






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






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

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19. 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






20. 10 : 1 - grounding ; surface






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






22. 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






23. 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






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






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






26. Over the Northern Hemisphere than the tropics.






27. 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






28. Rainy on yearly average. In these regions - rising air predominates.






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






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






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






32. The amount of light reflected by an object.






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






34. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






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






36. 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.






37. In _______ - the inversions are less frequent and weaker in the Arctic.






38. US is responsible for ___ of the total CO2






39. High vs low






40. Measures input and output.






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






42. Ice melting rapidly? What type causes sea level to rise? What have been the main contributors to sea level rise so far? What are the impacts of melting ice? - On nature - On humans






43. Holds unique and key information - Are highly interconnected - Respond and drive climate change - Are the largest freshwater reservoirs of the planet - Ice cores tell us that in climate records - nothing is regular and ice sheet plays major role.






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






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






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






47. 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%






48. 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






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






50. 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