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






2. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






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






4. Like weighing oneself on the scale.






5. 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






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

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7. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






8. Amount of light absorbed by surface






9. Radiation absorbed by atmospheric greenhouse gases?






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






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






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






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






14. 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.






15. 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






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






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






18. Extent will increase the warming because less energy will be reflected back to the atmosphere by the ice and more will be absorbed by the ocean.






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






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






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






22. Prolonged period of excessively hot weather - Which may be accompanied by high humidity.






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






24. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






25. Troposphere - Stratosphere (Ozone Layer) - Mesosphere - Ionosphere






26. 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






27. 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.






28. 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






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






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






31. Antarctica - stratosphere - Sep-Oct






32. Really measures volume.






33. A dome shaped cover of perennial ice and snow.






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






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






36. Number of days that exceed a given temperature






37. 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!






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






39. More common






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






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






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






43. Where do greenhouse gases warm up the Earth?






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






45. 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.






46. Sea ice - Continental ice sheets - Permafrost (frozen soil) - Mountain glaciers - Snow cover






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






48. Set up in 1988 by WMO and UNEP.






49. Over the past century what has happened to the Earth's temperature?






50. 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%