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. Forms in a mosaic of favoured locations.






2. Volcanic eruptions - Sunspots - Wobbly Earth






3. LW - SW - 55% absorbed by surface






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

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5. The large-scale ocean circulation that moves water between the deep and surface ocean which effects salinity and temperature change - Supplies heat to the polar-regions.






6. 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.






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






8. What can cause a change in the Earth's climate balance?






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






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






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






12. 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






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






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






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






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






17. 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






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






19. 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






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






21. 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.






22. 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






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






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






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






26. 10 : 1 - grounding ; surface






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






28. Radiation absorbed by atmospheric greenhouse gases?






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






30. Higher temperature increases atmospheric water vapor @ global scale more water vapor in the air that causes nights to stay warmer.






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






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






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






34. High vs low






35. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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36. How much is the planet really warming?






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






38. O Climate change in the Arctic is occurring now - Changes have been huge already






39. Land Based Ecosystems retain ____ CO2.






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






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






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






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






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






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






46. 85%






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






48. Like weighing oneself on the scale.






49. 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.






50. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface