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. Warming- positive feedback - Cooling- negative feedback.






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






3. Measures input and output.






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






5. At the bottom of the ice sheets the temperature doesn't necessarily have to be above 0... it could _____ more easily because of the water






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






7. Where does the ozone protect us?






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

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






10. Like weighing oneself on the scale.






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






12. 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






13. ~15% of incident solar energy (albedo 85)






14. Ice sheets have a very ____ Albedo






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






16. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






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






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






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






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






21. 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.






22. Ocean retains ____ CO2






23. 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.






24. Less frequent and weaker






25. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






26. 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






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






28. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






29. 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.






30. 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






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






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






33. Grace - Tells us how much mass change we have - M - This is the measure of gravity (gives us the mass) - Directly measure mass change - Poor resolution






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






35. Prolonged period of excessively hot weather - Which may be accompanied by high humidity.






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






37. Refers to the irregular warming in the Sea Surface Temperatures (SST) from the coasts of Peru and Ecuador to the equatorial central Pacific - the Southern Oscillation






38. Total absorbed solar radiation






39. O Unfrozen soil that stays within the permafrost.






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






41. 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






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






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






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

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45. Precipitation intensity will rise ___ for every 1 OC of warming.






46. Radiation absorbed by atmospheric greenhouse gases?






47. 240 w/m squared






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






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






50. Descending Air dry - Convection cells are wet.







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