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. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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






3. Ice sheets have a very ____ Albedo






4. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






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






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






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






8. 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.






9. he increase of ozone concentration in the atmosphere helps ____ our planet






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






11. Nitrogen (N2 78%) and Oxygen (O2 21%) - Their linear 2 atom molecular structure






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






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






14. 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.






15. Sea ice - Glaciers and Ice sheets - Alaska- ice glaciers - Greenland- ice sheets






16. 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.






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






18. Same as heating an apartment v home - Thinner atmosphere than tropics; warms faster.






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






20. The Earth emits this.






21. How often does El Nio occur?






22. Melting Point decreases






23. Refers to a body of freshwater - usually shallow - formed in a depression by melt water from thawing permafrost.






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






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






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






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






28. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






29. Amount of light absorbed by surface






30. Sea ice extent in Antarctica is rapidly reducing. Seasonal variability. People - Animals and Ice






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






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






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






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






35. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






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






38. 1. Keeps the ocean and the earth cooler 2. Coastal impacts of ice: prevents waves from eroding coastlines and protects from storms. 3. Ecological importance of ice: a. Most visibly for the many fish - birds - and mammal species that live in - on - or






39. Greenhouse gases are mixed in the ____






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






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






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






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






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






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






46. 240 w/m squared






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






48. 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.






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






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