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






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






3. Unfrozen ground that is found within a mass of permafrost






4. Antarctica - stratosphere - Sep-Oct






5. 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






6. Greenhouse gases are mixed in the ____






7. 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.






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






9. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






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






11. Permafrost- A frozen soil






12. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






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






14. ~10% of incident solar energy (albedo 90)






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






16. 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) -






17. Precipitation intensity will rise ___ for every 1 OC of warming.






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






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






20. Warming- positive feedback - Cooling- negative feedback.






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






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






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






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






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


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






27. Less frequent and weaker






28. Floating extensions are ice shelves - rivers of ice are ice streams or outlet glaciers - the junctions with the ocean are called the grounding line.






29. CO2 GHG forcing - H2O - dominant/major GHG






30. Atmosphere retains ____ CO2






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






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






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






34. 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.






35. A dome shaped cover of perennial ice and snow.






36. Over the Northern Hemisphere than the tropics.






37. Heat is provided by outside sources that flow down the continental slope to reach the deepest part of the glacier. High pressure decreases the melting point and favors melting.






38. 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






39. 85%






40. 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






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






42. Cooler water and drought conditions.






43. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






44. 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.






45. Ice melting rapidly? What type causes sea level to rise? What have been the main contributors to sea level rise so far? What are the impacts of melting ice? - On nature - On humans






46. The heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.






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






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


49. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv






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