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






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






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






4. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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5. Really measures volume.






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






7. 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






8. Set up in 1988 by WMO and UNEP.






9. Volcanic eruptions - Sunspots - Wobbly Earth






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






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






12. x7 smaller - 7m total sea level equivalent.






13. US is responsible for ___ of the total CO2






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






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






16. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)






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






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






19. Betts et al found that: if CO-2 __________ this has a physiological effect on plant transpiration increased simulated runoff by 6% b. How? i. More CO2 1. Plants pores open less 2. This reduces transpiration 3. More water in the land surface






20. ~15% of incident solar energy (albedo 85)






21. 1.4 USA - 57 m total sea level equivalent






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






23. 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






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






25. Greenhouse gases are a ___ portion of the atmosphere






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






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






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






29. Refers to a body of freshwater - usually shallow - formed in a depression by melt water from thawing permafrost.






30. In average: +1% in respect to 100 years ago.






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






32. Number of days that exceed a given temperature






33. 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.






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






35. Warming- positive feedback - Cooling- negative feedback.






36. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






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






38. How much is the planet really warming?






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






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






41. 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






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






43. Clouds 40~90% - Vegetation 10~15%






44. More common






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






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






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






48. Carbon dioxide - Methane - Ozone - Water Vapor - Few others - Most ___________________ are mixed in the troposphere (Except water vapor) - Water vapor is concentrated closer to the ground.






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






50. South polar vortex - Temperatures drop below 80O Celsius in the lower stratosphere - At these temperatures the chemicals in the stratosphere freeze and form Polar Stratospheric Clouds (PSCS) - These increase the concentration of CFCs in turn destroyi