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. 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.






2. O Unfrozen soil that stays within the permafrost.






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






4. Where do greenhouse gases warm up the Earth?






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






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






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






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






9. Antarctica - stratosphere - Sep-Oct






10. 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%






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






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






13. Like weighing oneself on the scale.






14. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






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






16. Thawing permafrost weakens coastal lands. Risk of flooding in coastal wetlands. Pollution and toxins locked in the snow and ice will be released.






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






18. Descending Air dry - Convection cells are wet.






19. 1.4 USA - 57 m total sea level equivalent






20. US is responsible for ___ of the total CO2






21. 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.






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






23. 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.






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






25. 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






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






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






28. 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.






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






30. Massive cooldown has allowed colder conditions to persist leading to cfcs stabilizing leading to ozone depletion. Later - more warming will lead to more moisture in the air which will lead to more snowfall!






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






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






33. Greenhouse gases are mixed in the ____






34. 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.






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






36. The Earth emits this.






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






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






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. 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.






41. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






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






44. Set up in 1988 by WMO and UNEP.






45. Ice sheets have a very ____ Albedo






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






47. 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.






48. A dome shaped cover of perennial ice and snow.






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






50. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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