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. Over the Northern Hemisphere than the tropics.






2. 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.






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






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






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






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






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






8. Water vapor means more water up in the clouds and less in the ground!






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






10. Descending Air dry - Convection cells are wet.






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






12. 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






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






14. Radiation absorbed by atmospheric greenhouse gases?






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






16. High vs low






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






18. Grace - Tells us how much mass change we have - M - This is the measure of gravity (gives us the mass) - Directly measure mass change - Poor resolution






19. Forms in a mosaic of favoured locations.






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






21. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






22. Permafrost- A frozen soil






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






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






25. 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






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






27. Number of days that exceed a given temperature






28. 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.






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






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






31. Rainy on yearly average. In these regions - rising air predominates.






32. 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






33. CO2 - CH4 - O3 - H2O - N2O - CFCs






34. 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.






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






36. Long time series started in the '70s and yielding good data in the '90s - Detects elevation with high accuracy: 10 cm precision (laser) to 1 m (radar) - 2/3 Gravity Surveys (GRACE) - Weighing the total mass every 30 days - Direct monthly estimate






37. Refers to the irregular warming in the Sea Surface Temperatures (SST) from the coasts of Peru and Ecuador to the equatorial central Pacific - the Southern Oscillation






38. The past climate...for this reason - both keep good records of climate change.






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






40. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






41. Measures input and output.






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






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






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






45. The Earth emits this.






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






47. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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48. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






49. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






50. ~15% of incident solar energy (albedo 85)