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. Warming- positive feedback - Cooling- negative feedback.






2. Really measures volume.






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






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






6. Like weighing oneself on the scale.






7. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






8. 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.






9. Massive cooldown has allowed colder conditions to persist leading to cfcs stabilizing leading to ozone depletion. Later - more warming will lead to more moisture in the air which will lead to more snowfall!






10. 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.






11. Forms from frozen ocean water - Floats on the ocean surface - Grows over the winter - melts in the summer






12. In _______ - the inversions are less frequent and weaker in the Arctic.






13. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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14. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






15. ~10% of incident solar energy (albedo 90)






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






17. Greenhouse gases are mixed in the ____






18. 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.






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






20. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






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






22. 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






23. 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






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






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






26. Set up in 1988 by WMO and UNEP.






27. 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






28. Laser radar - H V - Long time series - high accuracy - Density






29. Measures input and output.






30. Frozen +2 years - Few centimeters to 1500 m






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






32. Reduction of Summer Sea- 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 - Snow and snow covered ice absorb 15% of incident solar energy - Ice absorbs 10% of inc






33. 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) -






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






35. Antarctica - stratosphere - Sep-Oct






36. How much is the planet really warming?






37. 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






38. 85%






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






40. SMB- mass balance due to processes that affect the surface of the ice sheet. Precipitation- evapotranspiration-runoff-blowing snow etc.






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






42. 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.






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






44. Amount of light absorbed by surface






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






46. Heat is provided by outside sources that flow down the continental slope to reach the deepest part of the glacier. High pressure decreases the melting point and favors melting.






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






48. On a clear cold day - the thin layer of air hugging the ground is called inversion. This layer is much cooler than the air a few hundred meters above it.






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






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