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






2. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






3. 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.






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

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5. How often does El Nio occur?






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






7. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






8. 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.






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






10. Measures input and output.






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






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






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






14. ~15% of incident solar energy (albedo 85)






15. 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






16. Water vapor means more water up in the clouds and less in the ground!






17. Volcanic eruptions - Sunspots - Wobbly Earth






18. 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






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






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






21. US is responsible for ___ of the total CO2






22. Cooler water and drought conditions.






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. Number of days that land among the hottest of all days in that month's long-term record.






26. 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






27. Forms in a mosaic of favoured locations.






28. 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.






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






30. Frozen +2 years - Few centimeters to 1500 m






31. Amount of light absorbed by atmosphere






32. Greenhouse gases are mixed in the ____






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






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

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35. 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






36. In _______ - the inversions are less frequent and weaker in the Arctic.






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






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






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






40. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






41. Refers to the irregular warming in the Sea Surface Temperatures (SST) from the coasts of Peru and Ecuador to the equatorial central Pacific - the Southern Oscillation






42. Descending Air dry - Convection cells are wet.






43. The Earth emits this.






44. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






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






46. Greenhouse gases are a ___ portion of the atmosphere






47. Set up in 1988 by WMO and UNEP.






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






49. Antarctica - stratosphere - Sep-Oct






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







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