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. 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






2. 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






3. Warming- positive feedback - Cooling- negative feedback.






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






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






6. 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.






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






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






9. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






10. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






11. How much is the planet really warming?






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






13. Really measures volume.






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






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






16. 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






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






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






19. 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!






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






21. 240 w/m squared






22. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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23. Greenhouse gases are a ___ portion of the atmosphere






24. Fresh snow and snow-covered sea ice may have an albedo higher than 80% - even when melting in the summer. Sea ice has a higher albedo and can absorb as little as 10% of the solar energy. On average - sea ice albedo is around 85%






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






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






27. Measures input and output.






28. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






29. Number of days that exceed a given temperature






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






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






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






33. Volcanic eruptions - Sunspots - Wobbly Earth






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






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






36. How often does El Nio occur?






37. Forms in a mosaic of favoured locations.






38. Melting Point decreases






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






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






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






42. 1.4 USA - 57 m total sea level equivalent






43. Set up in 1988 by WMO and UNEP.






44. The high pressure decreases the melting point and favors melting - Melt water being less dense rises along the water column along the ice shelf bottom and may either escape the cavity or refreeze at some intermediate depth. Melting point decreases:






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






46. The land-surface configuration that results from the melting of ground ice in a region where permafrost degrades is called Thermokarst.






47. Where do greenhouse gases warm up the Earth?






48. The Earth emits this.






49. Like weighing oneself on the scale.






50. 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.