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. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






2. How much is the planet really warming?






3. Cooler water and drought conditions.






4. 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






5. Changes over time in the highest and lowest single temperature observed during a given month of the year.






6. Land Based Ecosystems retain ____ CO2.






7. Same amount of H2O - Mass does not change - Density of ice < density of water - Volume of ice > volume of water






8. In _______ - the inversions are less frequent and weaker in the Arctic.






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






10. On a clear cold day - the thin layer of air hugging the ground is called inversion. This layer is much cooler than the air a few hundred meters above it.






11. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






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






13. 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






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






15. Water vapor means more water up in the clouds and less in the ground!






16. 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.






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






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






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






20. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






21. 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.






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

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23. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






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






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






26. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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27. The heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.






28. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






29. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






30. The buoyant force is equal to the weight of the displaced water.

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






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






33. The Earth emits this.






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






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






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






37. The amount of light reflected by an object.






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






39. Volcanic eruptions - Sunspots - Wobbly Earth






40. Number of days that exceed a given temperature






41. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






42. 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






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






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






45. LW - SW - 55% absorbed by surface






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






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






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






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






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