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. Forms in a mosaic of favoured locations.






2. Warming- positive feedback - Cooling- negative feedback.






3. 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%






4. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






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






6. 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.






7. Where do greenhouse gases warm up the Earth?






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






9. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






10. 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!






11. 1.4 USA - 57 m total sea level equivalent






12. Cooler water and drought conditions.






13. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






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






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






16. The land-surface configuration that results from the melting of ground ice in a region where permafrost degrades is called Thermokarst.






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






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






19. The Earth emits this.






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






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






22. 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






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






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. Water vapor - 36-70% - carbon dioxide - 9-26% - methane - 4-9% - ozone - 3-7%






26. 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






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






28. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






29. Less frequent and weaker






30. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






31. Melting Point decreases






32. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






34. 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.






35. 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.






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






37. How much is the planet really warming?






38. US is responsible for ___ of the total CO2






39. Changes over time in the highest and lowest single temperature observed during a given month of the year.






40. Amount of light absorbed by surface






41. The buoyant force is equal to the weight of the displaced water.

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






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






44. Over the Northern Hemisphere than the tropics.






45. 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






46. In average: +1% in respect to 100 years ago.






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






48. How often does El Nio occur?






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






50. O Unfrozen soil that stays within the permafrost.