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. Volcanic eruptions - Sunspots - Wobbly Earth






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






3. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






4. High cloud has a _____ effect and cool cloud has a ____ effect






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






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






7. Amount of light absorbed by atmosphere






8. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






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






12. Grace - Tells us how much mass change we have - M - This is the measure of gravity (gives us the mass) - Directly measure mass change - Poor resolution






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






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






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






16. 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.






17. High vs low






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






19. Over the Northern Hemisphere than the tropics.






20. Greenhouse gases are mixed in the ____






21. 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






22. 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






23. US is responsible for ___ of the total CO2






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






25. Number of days that exceed a given temperature






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






27. Really measures volume.






28. Is best viewed as a combination of...- Natural Variability - Associated with atmospheric circulation patterns - Growing Radiative Forcing - Associated with rising concentrations of atmospheric greenhouse gases - Strongly suggests a human influence.






29. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






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






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






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






33. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






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






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






36. 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






37. 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.






38. Under higher pressure the melting point decreases ____ - The pressure comes from the weight of the ice shelf.






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






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






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






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






43. Less frequent and weaker






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






45. 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.






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






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






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






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






50. he increase of ozone concentration in the atmosphere helps ____ our planet