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






2. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






3. 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.






4. US is responsible for ___ of the total CO2






5. 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.






6. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






7. Amount of light absorbed by surface






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






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






10. ~15% of incident solar energy (albedo 85)






11. 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.






12. Total absorbed solar radiation






13. Ice sheets have a very ____ Albedo






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






15. Melting Point decreases






16. 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.






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






18. Troposphere - Stratosphere (Ozone Layer) - Mesosphere - Ionosphere






19. 240 w/m squared






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






21. 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.






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






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






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






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






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






27. Set up in 1988 by WMO and UNEP.






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






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






30. Radiation absorbed by atmospheric greenhouse gases?






31. 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.






32. Over the Northern Hemisphere than the tropics.






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






34. ~10% of incident solar energy (albedo 90)






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. 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.






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






38. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






39. Refers to a body of freshwater - usually shallow - formed in a depression by melt water from thawing permafrost.






40. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






41. The heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.






42. Same amount of H2O - Mass does not change - Density of ice < density of water - Volume of ice > volume of water






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






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






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






46. Ocean retains ____ CO2






47. 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.






48. High cloud has a _____ effect and cool cloud has a ____ effect






49. More common






50. Greenhouse gases are a ___ portion of the atmosphere