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. Over the Northern Hemisphere than the tropics.






2. 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






3. Set up in 1988 by WMO and UNEP.






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






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






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






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






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






9. 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.






10. 240 w/m squared






11. Ice sheets have a very ____ Albedo






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






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






14. 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.






15. 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






16. Permafrost- A frozen soil






17. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






18. 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.






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






20. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






21. Cooler water and drought conditions.






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






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






24. Measures input and output.






25. 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






26. 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






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






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






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






30. 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






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






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






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






34. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






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






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

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






38. High cloud has a _____ effect and cool cloud has a ____ effect






39. Descending Air dry - Convection cells are wet.






40. Total absorbed solar radiation






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






42. Greenhouse gases are a ___ portion of the atmosphere






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






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






45. ~10% of incident solar energy (albedo 90)






46. 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






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






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






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






50. 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.