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. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






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






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






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






5. 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






6. 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.






7. ~10% of incident solar energy (albedo 90)






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






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






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






11. Over the Northern Hemisphere than the tropics.






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






13. The heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.






14. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






15. Rainy on yearly average. In these regions - rising air predominates.






16. 10 : 1 - grounding ; surface






17. 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






18. Amount of light absorbed by surface






19. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






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






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






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






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






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






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






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






27. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






28. Number of days that exceed a given temperature






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






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






31. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






32. Holds unique and key information - Are highly interconnected - Respond and drive climate change - Are the largest freshwater reservoirs of the planet - Ice cores tell us that in climate records - nothing is regular and ice sheet plays major role.






33. 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.






34. Long time series started in the '70s and yielding good data in the '90s - Detects elevation with high accuracy: 10 cm precision (laser) to 1 m (radar) - 2/3 Gravity Surveys (GRACE) - Weighing the total mass every 30 days - Direct monthly estimate






35. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






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






37. Set up in 1988 by WMO and UNEP.






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






39. 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






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






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






42. How much is the planet really warming?






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






44. 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






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






46. Nitrogen (N2 78%) and Oxygen (O2 21%) - Their linear 2 atom molecular structure






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






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






49. 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






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

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