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. 10 : 1 - grounding ; surface






2. LW - SW - 55% absorbed by surface






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






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






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






6. O The amount of energy moving in the form of photons or other elementary particles at a certain distance from the source per unit of area per second. Area/second






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






8. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






9. 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






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






11. All processes that add snow or ice to a glacier or to flowing ice or snow cover.






12. 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






13. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






14. 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.






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






16. Forms in a mosaic of favoured locations.






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






18. Melting Point decreases






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






20. Top layer of soil that thaws during the summer and freezes again during autumn. - Between 1 and 3 m thick.






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






22. High vs low






23. The Earth emits this.






24. Total absorbed solar radiation






25. 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.






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






27. 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






28. Greenhouse gases are a ___ portion of the atmosphere






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






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






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






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






33. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






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






35. 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.






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






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






38. 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






39. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






40. ~15% of incident solar energy (albedo 85)






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






42. Amount of light absorbed by atmosphere






43. Fresh snow and snow-covered sea ice may have an albedo higher than 80% - even when melting in the summer. Sea ice has a higher albedo and can absorb as little as 10% of the solar energy. On average - sea ice albedo is around 85%






44. How often does El Nio occur?






45. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






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






47. Greenhouse gases are mixed in the ____






48. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






49. Like weighing oneself on the scale.






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