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. Radiation absorbed by atmospheric greenhouse gases?






2. Antarctica - stratosphere - Sep-Oct






3. 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%






4. Where do greenhouse gases warm up the Earth?






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






6. 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.






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






8. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






9. Where does the ozone protect us?






10. Melting Point decreases






11. Amount of light absorbed by surface






12. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century






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






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






15. Grace - Tells us how much mass change we have - M - This is the measure of gravity (gives us the mass) - Directly measure mass change - Poor resolution






16. Atmosphere retains ____ CO2






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

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






19. How much is the planet really warming?






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






21. The land-surface configuration that results from the melting of ground ice in a region where permafrost degrades is called Thermokarst.






22. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






24. Really measures volume.






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






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






27. Total absorbed solar radiation






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






29. Cooler water and drought conditions.






30. Low clouds are a ____ feedback; they will reflect more sunlight. Clouds reflect shortwave radiation but also absorb longwave radiation






31. 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.






32. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






33. 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






34. Atmospheric Cooling - Both negative (stabilizing) feedbacks - It is not happening now - but it has happened in the past - Ice-albedo feedback was the dominant feedback during the ice ages.






35. 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






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






37. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






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






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






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






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






42. High vs low






43. Ocean retains ____ CO2






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






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






46. 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.






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






48. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






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






50. ~15% of incident solar energy (albedo 85)