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. Permafrost- A frozen soil






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






3. 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!






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






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






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






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






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






9. 1.4 USA - 57 m total sea level equivalent






10. 240 w/m squared






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






12. 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






13. Greenhouse gases are mixed in the ____






14. 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






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






16. 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






17. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






18. Total absorbed solar radiation






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






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






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






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






23. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






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






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






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






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






28. 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






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






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






31. US is responsible for ___ of the total CO2






32. Set up in 1988 by WMO and UNEP.






33. Carbon dioxide - Methane - Ozone - Water Vapor - Few others - Most ___________________ are mixed in the troposphere (Except water vapor) - Water vapor is concentrated closer to the ground.






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






35. Number of days when temperatures climb above average by a fixed amount.






36. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






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






38. Really measures volume.






39. ~15% of incident solar energy (albedo 85)






40. Descending Air dry - Convection cells are wet.






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






42. Like weighing oneself on the scale.






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






44. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






45. 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






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






47. Is not an externally imposed perturbation to the climate system.






48. 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.






49. 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






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