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 Earth emits this.






2. 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






3. 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:






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






5. Ocean retains ____ CO2






6. 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






7. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






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






9. 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.






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






11. O Unfrozen soil that stays within the permafrost.






12. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






13. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






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






15. 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.






16. Less frequent and weaker






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






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






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






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






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






22. Greenhouse gases are a ___ portion of the atmosphere






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






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






25. CO2 GHG forcing - H2O - dominant/major GHG






26. Number of days that exceed a given temperature






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






28. 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






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






30. In troposphere = greenhouse warming gas - However - most of it is in the stratosphere.






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






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






33. 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






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






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






36. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






37. 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






38. Greenhouse gases are mixed in the ____






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






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






41. Set up in 1988 by WMO and UNEP.






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






43. 85%






44. Amount of light absorbed by surface






45. 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.






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






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






48. LW - SW - 55% absorbed by surface






49. 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






50. 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.