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. A dome shaped cover of perennial ice and snow.






2. Atmosphere retains ____ CO2






3. Where does the ozone protect us?






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






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






6. ~10% of incident solar energy (albedo 90)






7. 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






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






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






10. Closed talik can develop when lakes fill in with sediment and become deposits of dead plant material (bog).






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






12. How often does El Nio occur?






13. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






14. Laser radar - H V - Long time series - high accuracy - Density






15. What can cause a change in the Earth's climate balance?






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






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






18. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






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






20. O Unfrozen soil that stays within the permafrost.






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






22. Melting Point decreases






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






24. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






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






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






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






28. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv






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. Forms in a mosaic of favoured locations.






31. Number of days that exceed a given temperature






32. The buoyant force is equal to the weight of the displaced water.


33. 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.






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






35. Sea ice extent in Antarctica is rapidly reducing. Seasonal variability. People - Animals and Ice






36. Forms from frozen ocean water - Floats on the ocean surface - Grows over the winter - melts in the summer






37. 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%






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






39. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






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






41. ~15% of incident solar energy (albedo 85)






42. Like weighing oneself on the scale.






43. 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






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






45. Greenhouse gases are a ___ portion of the atmosphere






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






47. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






48. CO2 GHG forcing - H2O - dominant/major GHG






49. 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






50. Measures input and output.