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. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






4. Descending Air dry - Convection cells are wet.






5. x7 smaller - 7m total sea level equivalent.






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






7. High vs low






8. Set up in 1988 by WMO and UNEP.






9. Atmosphere retains ____ CO2






10. O Unfrozen soil that stays within the permafrost.






11. 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.






12. 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






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






14. Amount of light absorbed by surface






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






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






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






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






19. CO2 - CH4 - O3 - H2O - N2O - CFCs






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






21. he increase of ozone concentration in the atmosphere helps ____ our planet






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






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






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






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






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






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






28. Cooler water and drought conditions.






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






30. 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.






31. 240 w/m squared






32. 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.






33. 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






34. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






35. Amount of light absorbed by atmosphere






36. US is responsible for ___ of the total CO2






37. How often does El Nio occur?






38. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






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






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






41. High clouds are a ____ feedback; larger greenhouse warming - Clouds reflect shortwave radiation but also absorb longwave radiation






42. The high pressure decreases the melting point and favors melting - Melt water being less dense rises along the water column along the ice shelf bottom and may either escape the cavity or refreeze at some intermediate depth. Melting point decreases:






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






44. Closed talik can develop when lakes fill in with sediment and become deposits of dead plant material (bog).






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






46. The amount of light reflected by an object.






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






48. 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






49. Melting Point decreases






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