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






2. Measures input and output.






3. At the bottom of the ice sheets the temperature doesn't necessarily have to be above 0... it could _____ more easily because of the water






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

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5. 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






6. Where do greenhouse gases warm up the Earth?






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






8. 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






9. 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!






10. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






11. Forms in a mosaic of favoured locations.






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






13. Amount of light absorbed by surface






14. How much is the planet really warming?






15. ~10% of incident solar energy (albedo 90)






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






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






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






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






20. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






21. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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






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






24. 240 w/m squared






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






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

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27. 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






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






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






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






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






32. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






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






34. Number of days when temperatures climb above average by a fixed amount.






35. 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.






36. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






37. Rainy on yearly average. In these regions - rising air predominates.






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






39. More common






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






41. 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






42. Greenhouse gases are mixed in the ____






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






44. High vs low






45. Where does the ozone protect us?






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






47. Number of days that exceed a given temperature






48. Ice sheets have a very ____ Albedo






49. The amount of light reflected by an object.






50. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -







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Can you answer 50 questions in 15 minutes?


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