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






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

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






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






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

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






7. 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






8. Atmosphere retains ____ CO2






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






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






11. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






12. Volcanic eruptions - Sunspots - Wobbly Earth






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






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






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. Total absorbed solar radiation






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






18. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






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






20. 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






21. 1.4 USA - 57 m total sea level equivalent






22. Forms in a mosaic of favoured locations.






23. Where does the ozone protect us?






24. 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.






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






26. Greenhouse gases are a ___ portion of the atmosphere






27. Cooler water and drought conditions.






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






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






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






31. Heat is provided by outside sources that flow down the continental slope to reach the deepest part of the glacier. High pressure decreases the melting point and favors melting.






32. 240 w/m squared






33. The past climate...for this reason - both keep good records of climate change.






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






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






36. Less frequent and weaker






37. Number of days that exceed a given temperature






38. 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%






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






40. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)






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






42. Measures input and output.






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






44. A thick - floating slab of freshwater ice extending from coast to coast.






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






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






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






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






49. 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.






50. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv







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