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






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






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






4. 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






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






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






7. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






8. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






9. 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






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






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






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






13. US is responsible for ___ of the total CO2






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






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






16. Melting Point decreases






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






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






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






20. The amount of light reflected by an object.






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






22. 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






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






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






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






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






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






28. 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






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


30. 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.






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


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






33. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






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






35. Volcanic eruptions - Sunspots - Wobbly Earth






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






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






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






39. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






40. Really measures volume.






41. Most of the deserts are around 30 N and 30 S - where sinking air predominates






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






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






44. Forms in a mosaic of favoured locations.






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






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






47. Ice sheets have a very ____ Albedo






48. 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






49. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






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