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. The amount of light reflected by an object.






2. US is responsible for ___ of the total CO2






3. 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.






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






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






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






7. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






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

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






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






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






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






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






14. Melting Point decreases






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






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






17. 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!






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






19. Water vapor - 36-70% - carbon dioxide - 9-26% - methane - 4-9% - ozone - 3-7%






20. 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.






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






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






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






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






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






26. 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






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






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






29. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






30. Holds unique and key information - Are highly interconnected - Respond and drive climate change - Are the largest freshwater reservoirs of the planet - Ice cores tell us that in climate records - nothing is regular and ice sheet plays major role.






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






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






33. 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






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






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






36. Over the Northern Hemisphere than the tropics.






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






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






39. Arctic troposphere is thinner (8-10 km) than the tropics...The depth of the atmospheric layer is much shallower in the Arctic - It takes less energy to warm the Arctic rather than the Tropics - Same as heating an apartment vs. a house






40. 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.






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






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






43. 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%






44. 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.






45. 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






46. 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






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






48. Greenhouse gases are mixed in the ____






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






50. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.