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. 1.4 USA - 57 m total sea level equivalent






2. Amount of light absorbed by atmosphere






3. ~10% of incident solar energy (albedo 90)






4. Summer increase in cloud cover - Winter decrease in cloud cover.

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






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






7. 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.






8. South polar vortex - Temperatures drop below 80O Celsius in the lower stratosphere - At these temperatures the chemicals in the stratosphere freeze and form Polar Stratospheric Clouds (PSCS) - These increase the concentration of CFCs in turn destroyi






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






10. Like weighing oneself on the scale.






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






12. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






13. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






14. High clouds are a ____ feedback; larger greenhouse warming - Clouds reflect shortwave radiation but also absorb longwave radiation






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






16. Set up in 1988 by WMO and UNEP.






17. he increase of ozone concentration in the atmosphere helps ____ our planet






18. 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.






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






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






21. Less frequent and weaker






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






23. Land Based Ecosystems retain ____ CO2.






24. 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.






25. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






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






27. O Unfrozen soil that stays within the permafrost.






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






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






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






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






32. O The amount of energy moving in the form of photons or other elementary particles at a certain distance from the source per unit of area per second. Area/second






33. Measures input and output.






34. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






35. Total absorbed solar radiation






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






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






38. Descending Air dry - Convection cells are wet.






39. 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.






40. Longwave radiation - any radiation with a long wave will heat up quickly.






41. LW - SW - 55% absorbed by surface






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






43. Cooler water and drought conditions.






44. Industrial product - 300 ppb (parts per billion)






45. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






46. Number of days that exceed a given temperature






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






48. 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%






49. Radiation that comes from the Sun - Visible light - 'near infrared' - ultraviolet radiation.






50. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface