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. 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.






2. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






3. 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.






4. Antarctica - stratosphere - Sep-Oct






5. Set up in 1988 by WMO and UNEP.






6. 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






7. US is responsible for ___ of the total CO2






8. By contrast reflects only about 7% of solar radiation (Albedo~7%) - absorbing 93%.






9. High vs low






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






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






12. How much is the planet really warming?






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






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






15. Number of days that exceed a given temperature






16. 1. Land usage changes 2. Seasonal timing 3. Rising CO2 levels may be a factor






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






18. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






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






20. Really measures volume.






21. Ice sheets have a very ____ Albedo






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






23. Forms in a mosaic of favoured locations.






24. 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.






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






26. Precipitation intensity will rise ___ for every 1 OC of warming.






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






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






29. 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.






30. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






31. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






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






33. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






34. Warming- positive feedback - Cooling- negative feedback.






35. 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.






36. Permafrost- A frozen soil






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






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






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






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






41. 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.






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






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






44. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






45. Where does the ozone protect us?






46. 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






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






48. 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.






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






50. ~10% of incident solar energy (albedo 90)