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






2. Where do greenhouse gases warm up the Earth?






3. Permafrost- A frozen soil






4. 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






5. 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






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






7. Like weighing oneself on the scale.






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






9. Number of days that exceed a given temperature






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






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






12. Warming- positive feedback - Cooling- negative feedback.






13. LW - SW - 55% absorbed by surface






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






15. Summer increase in cloud cover - Winter decrease in cloud cover.

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






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

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






19. 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.






20. 240 w/m squared






21. On a clear cold day - the thin layer of air hugging the ground is called inversion. This layer is much cooler than the air a few hundred meters above it.






22. 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






23. ~10% of incident solar energy (albedo 90)






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






25. Refers to a body of freshwater - usually shallow - formed in a depression by melt water from thawing permafrost.






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






27. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






28. 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.






29. 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






30. 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






31. Changes over time in the highest and lowest single temperature observed during a given month of the year.






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






33. High cloud has a _____ effect and cool cloud has a ____ effect






34. 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.






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






36. Positive Albedo Feedback - increase in temperature melts ice and snow reduces albedo increases temperature melts ice and snow reduces albedo... ETC






37. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






38. Ocean retains ____ CO2






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






40. Descending Air dry - Convection cells are wet.






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






42. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






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






44. 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.






45. 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






46. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






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






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






49. 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.






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







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