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. Ice sheets have a very ____ Albedo






2. Ocean retains ____ CO2






3. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






5. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






6. 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






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






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






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






10. 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






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






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






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






14. 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.






15. Where does the ozone protect us?






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






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






18. 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






19. Descending Air dry - Convection cells are wet.






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






21. LW - SW - 55% absorbed by surface






22. 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:






23. Set up in 1988 by WMO and UNEP.






24. 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






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






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






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






28. The major distinction between the Protocol and the Convention is that while the Convention encouraged industrialized countries to stabilize GHG emissions - the Protocol commits them to do so.






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






30. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






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






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






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






34. Greenhouse gases are mixed in the ____






35. 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.






36. 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






37. Warming- positive feedback - Cooling- negative feedback.






38. Really measures volume.






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






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






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






42. US is responsible for ___ of the total CO2






43. Sea ice - Glaciers and Ice sheets - Alaska- ice glaciers - Greenland- ice sheets






44. Atmosphere retains ____ CO2






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






46. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






47. Land Based Ecosystems retain ____ CO2.






48. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






49. O Unfrozen soil that stays within the permafrost.






50. 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