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. Ocean retains ____ CO2






2. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century






3. In troposphere = greenhouse warming gas - However - most of it is in the stratosphere.






4. Greenhouse gases are mixed in the ____






5. 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.






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






7. 1.4 USA - 57 m total sea level equivalent






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






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






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






11. 240 w/m squared






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






13. 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.






14. Atmospheric Cooling - Both negative (stabilizing) feedbacks - It is not happening now - but it has happened in the past - Ice-albedo feedback was the dominant feedback during the ice ages.






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






16. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






17. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






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

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






20. Forms in a mosaic of favoured locations.






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






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






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






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






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






26. US is responsible for ___ of the total CO2






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






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






29. Reduction of Summer Sea- 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 - Snow and snow covered ice absorb 15% of incident solar energy - Ice absorbs 10% of inc






30. Melting Point decreases






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






32. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






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






34. 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.






35. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






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






37. 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.






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






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






40. ~15% of incident solar energy (albedo 85)






41. Radiation absorbed by atmospheric greenhouse gases?






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






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






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






45. 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






46. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






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






48. 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.






49. 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






50. Antarctica - stratosphere - Sep-Oct