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. Where do greenhouse gases warm up the Earth?






2. Ocean retains ____ CO2






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






4. 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.






5. Absolute thresholds - Monthly maximums and minimums - Threshold departures - Percentile departure - Atmospheric Water Vapor: More water vapor in the air - warmer nights!






6. Frozen +2 years - Few centimeters to 1500 m






7. Where does the ozone protect us?






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






9. Higher temperature increases atmospheric water vapor @ global scale more water vapor in the air that causes nights to stay warmer.






10. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






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






12. Cooler water and drought conditions.






13. 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.






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






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






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






17. Industrial product - 300 ppb (parts per billion)






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






19. 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.






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






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






22. How much is the planet really warming?






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






24. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






26. 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.






27. 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






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






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






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






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






32. A process whereby slabs of ice at the glacier margin mechanically fracture and detach from the main ice mass -






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






34. 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






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






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

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37. Permafrost- A frozen soil






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






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






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

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41. 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.






42. 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






43. High vs low






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






45. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






46. Taliks are found under lakes because of the ability of water to store and vertically transfer heat energy - Vertical extent of the taliks found under lakes is related to the depth and volume of the overlying water body.






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






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






49. How often does El Nio occur?






50. LW - SW - 55% absorbed by surface