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






2. Amount of light absorbed by surface






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






4. 10 : 1 - grounding ; surface






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






6. 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






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






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






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






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






11. 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






12. 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.






13. Cooler water and drought conditions.






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






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






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






17. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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

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19. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






20. Sea ice - Glaciers and Ice sheets - Alaska- ice glaciers - Greenland- ice sheets






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






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






23. 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.






24. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






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






26. Ocean retains ____ CO2






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






28. 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.






29. Betts et al found that: if CO-2 __________ this has a physiological effect on plant transpiration increased simulated runoff by 6% b. How? i. More CO2 1. Plants pores open less 2. This reduces transpiration 3. More water in the land surface






30. High vs low






31. Melting Point decreases






32. 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






33. Forms in a mosaic of favoured locations.






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






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






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






37. 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:






38. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






39. O Unfrozen soil that stays within the permafrost.






40. 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.






41. Over the past century what has happened to the Earth's temperature?






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






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






44. Like weighing oneself on the scale.






45. Really measures volume.






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






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






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






49. Radiation absorbed by atmospheric greenhouse gases?






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