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. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






2. Reduction of snow and ice cover - Changes in atmospheric circulation.






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






4. 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:






5. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






6. The major distinction between the Protocol and the Convention is that while the Convention encouraged industrialized countries to stabilize GHG emissions - the Protocol commits them to do so.






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






8. O Unfrozen soil that stays within the permafrost.






9. 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.






10. Descending Air dry - Convection cells are wet.






11. Melting Point decreases






12. How often does El Nio occur?






13. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






14. 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






15. 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%






16. Greenhouse gases are a ___ portion of the atmosphere






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






18. 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.






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






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






21. Permafrost- A frozen soil






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






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






24. Nitrogen (N2 78%) and Oxygen (O2 21%) - Their linear 2 atom molecular structure






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






26. 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






27. Amount of light absorbed by atmosphere






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. 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.






30. How much is the planet really warming?






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






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






33. Warming- positive feedback - Cooling- negative feedback.






34. Refers to the irregular warming in the Sea Surface Temperatures (SST) from the coasts of Peru and Ecuador to the equatorial central Pacific - the Southern Oscillation






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






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






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






38. Radiation absorbed by atmospheric greenhouse gases?






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






40. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






41. Antarctica - stratosphere - Sep-Oct






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






43. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






44. 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.






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






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






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






48. Really measures volume.






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






50. Changes over time in the highest and lowest single temperature observed during a given month of the year.