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. 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.






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






3. Melting Point decreases






4. Cooler water and drought conditions.






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






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






7. Total absorbed solar radiation






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

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9. 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.






10. 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






11. Antarctica - stratosphere - Sep-Oct






12. Taliks are found under lakes because of the ability of water to store and vertically transfer heat energy - Vertical extent of the taliks found under lakes is related to the depth and volume of the overlying water body.






13. Greenhouse gases are mixed in the ____






14. Permafrost- A frozen soil






15. 1.4 USA - 57 m total sea level equivalent






16. Where does the ozone protect us?






17. What can cause a change in the Earth's climate balance?






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






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






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






21. Volcanic eruptions - Sunspots - Wobbly Earth






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






23. Same amount of H2O - Mass does not change - Density of ice < density of water - Volume of ice > volume of water






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






25. Is best viewed as a combination of...- Natural Variability - Associated with atmospheric circulation patterns - Growing Radiative Forcing - Associated with rising concentrations of atmospheric greenhouse gases - Strongly suggests a human influence.






26. Warming- positive feedback - Cooling- negative feedback.






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






28. Sea ice - Continental ice sheets - Permafrost (frozen soil) - Mountain glaciers - Snow cover






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






30. Industrial product - 300 ppb (parts per billion)






31. ~15% of incident solar energy (albedo 85)






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






33. 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.






34. 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.






35. LW - SW - 55% absorbed by surface






36. 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%






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






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






39. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






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






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






42. 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.






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






44. How often does El Nio occur?






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






46. 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:






47. Really measures volume.






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






49. Like weighing oneself on the scale.






50. 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