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






2. US is responsible for ___ of the total CO2






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






4. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






5. 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.






6. Unfrozen ground that is found within a mass of permafrost






7. 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






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






9. Cooler water and drought conditions.






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






11. 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






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






13. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






14. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






15. Descending Air dry - Convection cells are wet.






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






17. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century






18. 1.4 USA - 57 m total sea level equivalent






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






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






21. 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






22. 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!






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






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






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






26. Really measures volume.






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






28. The amount of light reflected by an object.






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






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






31. Forms in a mosaic of favoured locations.






32. ~10% of incident solar energy (albedo 90)






33. How often does El Nio occur?






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






35. 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






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






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






38. 85%






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






40. Number of days when temperatures climb above average by a fixed amount.






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






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






43. Where does the ozone protect us?






44. 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






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






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






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






48. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






49. 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%






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

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