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 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.






2. Where does the ozone protect us?






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






4. 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






5. 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






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






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






8. Help darkens the snow and ice surface - increasing the amount of energy that is absorbed.






9. Antarctica - stratosphere - Sep-Oct






10. Volcanic eruptions - Sunspots - Wobbly Earth






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






12. Over the past century what has happened to the Earth's temperature?






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






14. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






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

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16. 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






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






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






19. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






20. Ocean retains ____ CO2






21. Atmosphere retains ____ CO2






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






23. Less frequent and weaker






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






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






26. LW - SW - 55% absorbed by surface






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. Tundra absorbs more energy than ice and snow but less than scrubs and forest - and with those plants migrating towards the north - they will further contribute ot absorb more energy.






29. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






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






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






32. Permafrost- A frozen soil






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






34. he increase of ozone concentration in the atmosphere helps ____ our planet






35. Land Based Ecosystems retain ____ CO2.






36. Longwave radiation - any radiation with a long wave will heat up quickly.






37. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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38. 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






39. 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






40. 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.






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






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






43. Where do greenhouse gases warm up the Earth?






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






45. 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:






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






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






48. Higher temperature increases atmospheric water vapor @ global scale more water vapor in the air that causes nights to stay warmer.






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






50. Under higher pressure the melting point decreases ____ - The pressure comes from the weight of the ice shelf.