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. 85%






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






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






4. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






5. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






6. Over the past century what has happened to the Earth's temperature?






7. 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






8. Greenhouse gases are a ___ portion of the atmosphere






9. Amount of light absorbed by surface






10. Prolonged period of excessively hot weather - Which may be accompanied by high humidity.






11. The amount of light reflected by an object.






12. Sea ice - Glaciers and Ice sheets - Alaska- ice glaciers - Greenland- ice sheets






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






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






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






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






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






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






19. Higher temperature increases atmospheric water vapor @ global scale more water vapor in the air that causes nights to stay warmer.






20. Set up in 1988 by WMO and UNEP.






21. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






22. Floating extensions are ice shelves - rivers of ice are ice streams or outlet glaciers - the junctions with the ocean are called the grounding line.






23. Betts et al found that: if CO-2 __________ this has a physiological effect on plant transpiration increased simulated runoff by 6% b. How? i. More CO2 1. Plants pores open less 2. This reduces transpiration 3. More water in the land surface






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






25. 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.






26. 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.






27. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






28. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






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






32. In average: +1% in respect to 100 years ago.






33. Less frequent and weaker






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






35. Total absorbed solar radiation






36. The Earth emits this.






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






38. The high pressure decreases the melting point and favors melting - Melt water being less dense rises along the water column along the ice shelf bottom and may either escape the cavity or refreeze at some intermediate depth. Melting point decreases:






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






40. O Unfrozen soil that stays within the permafrost.






41. A process whereby slabs of ice at the glacier margin mechanically fracture and detach from the main ice mass -






42. Forms in a mosaic of favoured locations.






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






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






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






46. 1.4 USA - 57 m total sea level equivalent






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






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






49. Measures input and output.






50. 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.