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 warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






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






3. Low clouds are a ____ feedback; they will reflect more sunlight. Clouds reflect shortwave radiation but also absorb longwave radiation






4. How much is the planet really warming?






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






6. 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






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






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






9. 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






10. 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.






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






12. Atmospheric Cooling - Both negative (stabilizing) feedbacks - It is not happening now - but it has happened in the past - Ice-albedo feedback was the dominant feedback during the ice ages.






13. Cooler water and drought conditions.






14. US is responsible for ___ of the total CO2






15. Ocean retains ____ CO2






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






17. Positive Albedo Feedback - increase in temperature melts ice and snow reduces albedo increases temperature melts ice and snow reduces albedo... ETC






18. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






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






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






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

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






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






26. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






27. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






28. 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






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






30. Measures input and output.






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






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






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






34. 1.4 USA - 57 m total sea level equivalent






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






36. 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.






37. Precipitation intensity will rise ___ for every 1 OC of warming.






38. 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.






39. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






40. Atmosphere retains ____ CO2






41. Sea ice extent in Antarctica is rapidly reducing. Seasonal variability. People - Animals and Ice






42. 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.






43. CO2 - CH4 - O3 - H2O - N2O - CFCs






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






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






46. Where do greenhouse gases warm up the Earth?






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






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






49. Set up in 1988 by WMO and UNEP.






50. The order of 1 m/year. Melting is ten times more.