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. Where does the ozone protect us?






2. O Unfrozen soil that stays within the permafrost.






3. 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






4. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






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






6. Where do greenhouse gases warm up the Earth?






7. Surface Mass Balance is of the order of _____ melting is ____ times more.






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






9. Ice melting rapidly? What type causes sea level to rise? What have been the main contributors to sea level rise so far? What are the impacts of melting ice? - On nature - On humans






10. More common






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






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






13. ~10% of incident solar energy (albedo 90)






14. Clouds 40~90% - Vegetation 10~15%






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






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






17. 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.






18. US is responsible for ___ of the total CO2






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






20. Tundra absorbs more energy than ice and snow but less than scrubs and forest - and with those plants migrating towards the north - they will further contribute ot absorb more energy.






21. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






22. 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






23. 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.






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






25. 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






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






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






28. Atmosphere retains ____ CO2






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






30. Ice sheets have a very ____ Albedo






31. How often does El Nio occur?






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. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






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






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






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






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

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38. LW - SW - 55% absorbed by surface






39. Arctic troposphere is thinner (8-10 km) than the tropics...The depth of the atmospheric layer is much shallower in the Arctic - It takes less energy to warm the Arctic rather than the Tropics - Same as heating an apartment vs. a house






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






41. 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%






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






43. 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.






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






45. 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






46. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)






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






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






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






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