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






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






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






4. US is responsible for ___ of the total CO2






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






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






7. 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!






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






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






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






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






12. Absolute thresholds - Monthly maximums and minimums - Threshold departures - Percentile departure - Atmospheric Water Vapor: More water vapor in the air - warmer nights!






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






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






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






16. Extent 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.






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






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






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






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






21. O Unfrozen soil that stays within the permafrost.






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






23. 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.






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






25. How much is the planet really warming?






26. Over the Northern Hemisphere than the tropics.






27. The amount of light reflected by an object.






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






29. Water vapor means more water up in the clouds and less in the ground!






30. 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.






31. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






32. 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






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






34. 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.






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






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






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






38. Surface Mass Balance is of the order of _____ melting is ____ times more.






39. 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.






40. 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:






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






42. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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43. 240 w/m squared






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






45. 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.






46. 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






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






48. Ice flowing from the middle of Greenland to the edges and melting. 90 feet a day- speed that ice is moving.






49. LW - SW - 55% absorbed by surface






50. Thawing permafrost weakens coastal lands. Risk of flooding in coastal wetlands. Pollution and toxins locked in the snow and ice will be released.