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. Reduction of snow and ice cover - Changes in atmospheric circulation.






2. 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






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






4. Same as heating an apartment v home - Thinner atmosphere than tropics; warms faster.






5. 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%






6. 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






7. High vs low






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






9. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






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






11. Greenhouse gases are a ___ portion of the atmosphere






12. 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.






13. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






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






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






16. Where does the ozone protect us?






17. Amount of light absorbed by surface






18. 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.






19. 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.






20. ~15% of incident solar energy (albedo 85)






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






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






23. Like weighing oneself on the scale.






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






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






26. 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






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






28. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






29. The amount of light reflected by an object.






30. Amount of light absorbed by atmosphere






31. Refers to the irregular warming in the Sea Surface Temperatures (SST) from the coasts of Peru and Ecuador to the equatorial central Pacific - the Southern Oscillation






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






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






34. 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






35. In ________- inversion layer is more common in the Arctic






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






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






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






40. 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






41. Radiation that comes from the Sun - Visible light - 'near infrared' - ultraviolet radiation.






42. How often does El Nio occur?






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






44. Average molecular life span is less than 10 years - Major sources: Wetlands and oceans - Raising cattle and landfills.






45. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






46. Most of the deserts are around 30 N and 30 S - where sinking air predominates






47. 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.






48. Holds unique and key information - Are highly interconnected - Respond and drive climate change - Are the largest freshwater reservoirs of the planet - Ice cores tell us that in climate records - nothing is regular and ice sheet plays major role.






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






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