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






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






3. Positive Albedo Feedback - increase in temperature melts ice and snow reduces albedo increases temperature melts ice and snow reduces albedo... ETC






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






5. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






6. 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






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






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






9. Volcanic eruptions - Sunspots - Wobbly Earth






10. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






11. Changes over time in the highest and lowest single temperature observed during a given month of the year.






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






13. O Unfrozen soil that stays within the permafrost.






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






15. Where does the ozone protect us?






16. By contrast reflects only about 7% of solar radiation (Albedo~7%) - absorbing 93%.






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






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

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






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






21. 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.






22. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






23. 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






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






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






26. 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






27. Descending Air dry - Convection cells are wet.






28. Land Based Ecosystems retain ____ CO2.






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






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






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






32. Occurs when there is not enough water available for a particular crop to grow at a particular time.Typically seen after!meteorological drought (when rainfall decreases) but before a hydrological drought






33. Amount of light absorbed by atmosphere






34. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






35. 85%






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






37. 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






38. 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






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






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






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






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






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






44. Set up in 1988 by WMO and UNEP.






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






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

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47. Forms in a mosaic of favoured locations.






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






49. Radiation absorbed by atmospheric greenhouse gases?






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