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






2. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






3. 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






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






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






6. Less frequent and weaker






7. LW - SW - 55% absorbed by surface






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






9. Melting Point decreases






10. Same as heating an apartment v home - Thinner atmosphere than tropics; warms faster.






11. 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






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






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






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






15. Land Based Ecosystems retain ____ CO2.






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






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






18. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






19. 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






20. 1. Keeps the ocean and the earth cooler 2. Coastal impacts of ice: prevents waves from eroding coastlines and protects from storms. 3. Ecological importance of ice: a. Most visibly for the many fish - birds - and mammal species that live in - on - or






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






22. High vs low






23. 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






24. Volcanic eruptions - Sunspots - Wobbly Earth






25. 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.






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






27. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






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






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






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






31. Number of days that exceed a given temperature






32. Where does the ozone protect us?






33. 1.4 USA - 57 m total sea level equivalent






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

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






36. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






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






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






39. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






40. 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






41. 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






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






43. A thick - floating slab of freshwater ice extending from coast to coast.






44. 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






45. Permafrost- A frozen soil






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






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






48. Greenhouse gases are mixed in the ____






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






50. US is responsible for ___ of the total CO2