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






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






3. High vs low






4. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






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

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






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






8. 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.






9. 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






10. Tundra absorbs more energy than ice and snow but less than scrubs and forest - and with those plants migrating towards the north - they will further contribute ot absorb more energy.






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






12. ~10% of incident solar energy (albedo 90)






13. SMB- mass balance due to processes that affect the surface of the ice sheet. Precipitation- evapotranspiration-runoff-blowing snow etc.






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






15. 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.






16. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






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






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






19. 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.






20. The major distinction between the Protocol and the Convention is that while the Convention encouraged industrialized countries to stabilize GHG emissions - the Protocol commits them to do so.






21. Water vapor means more water up in the clouds and less in the ground!






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






23. 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






24. 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






25. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






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






27. Volcanic eruptions - Sunspots - Wobbly Earth






28. Amount of light absorbed by surface






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






30. Is best viewed as a combination of...- Natural Variability - Associated with atmospheric circulation patterns - Growing Radiative Forcing - Associated with rising concentrations of atmospheric greenhouse gases - Strongly suggests a human influence.






31. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






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






33. Number of days that land among the hottest of all days in that month's long-term record.






34. Like weighing oneself on the scale.






35. Greenhouse gases are mixed in the ____






36. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






38. Warming- positive feedback - Cooling- negative feedback.






39. 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






40. 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!






41. 1. Land usage changes 2. Seasonal timing 3. Rising CO2 levels may be a factor






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






43. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






44. Amount of light absorbed by atmosphere






45. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






46. Ice melting rapidly? What type causes sea level to rise? What have been the main contributors to sea level rise so far? What are the impacts of melting ice? - On nature - On humans






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






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






49. 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.






50. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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