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. Cooler water and drought conditions.






2. 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






3. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






4. 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.






5. 85%






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






7. All processes that add snow or ice to a glacier or to flowing ice or snow cover.






8. 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






9. 1.4 USA - 57 m total sea level equivalent






10. The Earth emits this.






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

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12. Really measures volume.






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






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






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






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






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






18. 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






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






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






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






22. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






23. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






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






25. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






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






27. LW - SW - 55% absorbed by surface






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






29. Measures input and output.






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






31. 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:






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






33. Arctic troposphere is thinner (8-10 km) than the tropics...The depth of the atmospheric layer is much shallower in the Arctic - It takes less energy to warm the Arctic rather than the Tropics - Same as heating an apartment vs. a house






34. 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.






35. 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.






36. Amount of light absorbed by atmosphere






37. 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%






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






39. Less frequent and weaker






40. 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






41. The large-scale ocean circulation that moves water between the deep and surface ocean which effects salinity and temperature change - Supplies heat to the polar-regions.






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. Surface Mass Balance is of the order of _____ melting is ____ times more.






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






45. 10 : 1 - grounding ; surface






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






47. The amount of light reflected by an object.






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






49. Extent 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.






50. 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