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. The Earth emits this.






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






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

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4. 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.






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






6. 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.






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






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






9. Where does the ozone protect us?






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






11. 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.






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






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






14. 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






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






16. O The amount of energy moving in the form of photons or other elementary particles at a certain distance from the source per unit of area per second. Area/second






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






18. Occurs when there is not enough water available for a particular crop to grow at a particular time.Typically seen after!meteorological drought (when rainfall decreases) but before a hydrological drought






19. ~15% of incident solar energy (albedo 85)






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






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






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






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






24. Greenhouse gases are a ___ portion of the atmosphere






25. Less frequent and weaker






26. Is not an externally imposed perturbation to the climate system.






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






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






29. How often does El Nio occur?






30. 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.






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






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






33. 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






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






35. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






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






37. Where do greenhouse gases warm up the Earth?






38. Atmosphere retains ____ CO2






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






40. 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) -






41. Amount of light absorbed by atmosphere






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






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






44. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






45. Amount of light absorbed by surface






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






47. 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%






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






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






50. Over the Northern Hemisphere than the tropics.







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