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. 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






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. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






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






5. Amount of light absorbed by atmosphere






6. More common






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






8. Measures input and output.






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






10. Melting Point decreases






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






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

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






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






15. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






16. 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%






17. 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






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






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






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






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






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






24. Greenhouse gases are a ___ portion of the atmosphere






25. 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






26. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






27. 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






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






29. 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






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






31. O Unfrozen soil that stays within the permafrost.






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






33. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






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






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






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






37. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






38. LW - SW - 55% absorbed by surface






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






40. What can cause a change in the Earth's climate balance?






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






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






43. The Earth emits this.






44. How often does El Nio occur?






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






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






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






48. 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






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

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50. In average: +1% in respect to 100 years ago.







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Can you answer 50 questions in 15 minutes?


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