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. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






2. 1.4 USA - 57 m total sea level equivalent






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






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






5. When meltwater seeps through a flowing glacier - it can lubricate the base and hasten the glacier's seaward flow.






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






7. 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






8. US is responsible for ___ of the total CO2






9. High vs low






10. Set up in 1988 by WMO and UNEP.






11. ~15% of incident solar energy (albedo 85)






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






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






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






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






16. Less frequent and weaker






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






18. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






19. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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






21. Ice sheets have a very ____ Albedo






22. 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.






23. Forms in a mosaic of favoured locations.






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






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






26. Land Based Ecosystems retain ____ CO2.






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






28. 240 w/m squared






29. Frozen +2 years - Few centimeters to 1500 m






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






31. Ice melting rapidly? What type causes sea level to rise? What have been the main contributors to sea level rise so far? What are the impacts of melting ice? - On nature - On humans






32. 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






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

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34. 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.






35. Arctic troposphere is thinner (8-10 km) than the tropics...The depth of the atmospheric layer is much shallower in the Arctic - It takes less energy to warm the Arctic rather than the Tropics - Same as heating an apartment vs. a house






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






37. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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38. 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.






39. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






40. ~10% of incident solar energy (albedo 90)






41. Warming- positive feedback - Cooling- negative feedback.






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






43. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






44. Antarctica - stratosphere - Sep-Oct






45. Positive Albedo Feedback - increase in temperature melts ice and snow reduces albedo increases temperature melts ice and snow reduces albedo... ETC






46. Clouds 40~90% - Vegetation 10~15%






47. At the bottom of the ice sheets the temperature doesn't necessarily have to be above 0... it could _____ more easily because of the water






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






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






50. 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