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. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






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






3. Radiation absorbed by atmospheric greenhouse gases?






4. 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






5. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






6. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






7. How much is the planet really warming?






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






9. 10 : 1 - grounding ; surface






10. 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.






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






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






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






14. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






15. Longwave radiation - any radiation with a long wave will heat up quickly.






16. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






17. Forms in a mosaic of favoured locations.






18. Antarctica - stratosphere - Sep-Oct






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






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. Where does the ozone protect us?






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






23. The Earth emits this.






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






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






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






27. More common






28. Massive cooldown has allowed colder conditions to persist leading to cfcs stabilizing leading to ozone depletion. Later - more warming will lead to more moisture in the air which will lead to more snowfall!






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






30. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






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






32. Atmosphere retains ____ CO2






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






34. Ocean retains ____ CO2






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






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






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






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






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






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






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






42. 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






43. LW - SW - 55% absorbed by surface






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






45. In troposphere = greenhouse warming gas - However - most of it is in the stratosphere.






46. ~15% of incident solar energy (albedo 85)






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






48. Laser radar - H V - Long time series - high accuracy - Density






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






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