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. 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






3. Less frequent and weaker






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






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






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






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






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






9. LW - SW - 55% absorbed by surface






10. Cooler water and drought conditions.






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






12. ~15% of incident solar energy (albedo 85)






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






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






15. Where does the ozone protect us?






16. Really measures volume.






17. Measures input and output.






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






19. 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.






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






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






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






23. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






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






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






26. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






27. 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%






28. High cloud has a _____ effect and cool cloud has a ____ effect






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






30. 1. Land usage changes 2. Seasonal timing 3. Rising CO2 levels may be a factor






31. SMB- mass balance due to processes that affect the surface of the ice sheet. Precipitation- evapotranspiration-runoff-blowing snow etc.






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






33. Ice sheets have a very ____ Albedo






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

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






36. High vs low






37. Average molecular life span is less than 10 years - Major sources: Wetlands and oceans - Raising cattle and landfills.






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

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39. 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






40. Greenhouse gases are a ___ portion of the atmosphere






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






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






43. Atmosphere retains ____ CO2






44. 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.






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






46. The amount of light reflected by an object.






47. Greenhouse gases are mixed in the ____






48. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






49. 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






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