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. Melting Point decreases






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






3. Cooler water and drought conditions.






4. Atmospheric Cooling - Both negative (stabilizing) feedbacks - It is not happening now - but it has happened in the past - Ice-albedo feedback was the dominant feedback during the ice ages.






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






6. Forms in a mosaic of favoured locations.






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






8. Less frequent and weaker






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






10. Set up in 1988 by WMO and UNEP.






11. US is responsible for ___ of the total CO2






12. 240 w/m squared






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






14. The order of 1 m/year. Melting is ten times more.






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






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. 10 : 1 - grounding ; surface






18. 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!






19. The large-scale ocean circulation that moves water between the deep and surface ocean which effects salinity and temperature change - Supplies heat to the polar-regions.






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






21. Top layer of soil that thaws during the summer and freezes again during autumn. - Between 1 and 3 m thick.






22. Where do greenhouse gases warm up the Earth?






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






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






25. Reduction of Summer Sea- 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 - Snow and snow covered ice absorb 15% of incident solar energy - Ice absorbs 10% of inc






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






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






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






29. Surface Mass Balance is of the order of _____ melting is ____ times more.






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






31. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






32. 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






33. 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






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






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






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






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






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






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






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






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






42. Greenhouse gases are a ___ portion of the atmosphere






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






44. Warming- positive feedback - Cooling- negative feedback.






45. The Earth emits this.






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






47. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






48. When meltwater seeps through a flowing glacier - it can lubricate the base and hasten the glacier's seaward flow.






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






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







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