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






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






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






4. 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.






5. Forms from frozen ocean water - Floats on the ocean surface - Grows over the winter - melts in the summer






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






7. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






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






9. Land Based Ecosystems retain ____ CO2.






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






11. Warming- positive feedback - Cooling- negative feedback.






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






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






14. Amount of light absorbed by atmosphere






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






16. 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.






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






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






19. 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






20. 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!






21. 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.






22. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






23. Rainy on yearly average. In these regions - rising air predominates.






24. Like weighing oneself on the scale.






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






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






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






28. High clouds are a ____ feedback; larger greenhouse warming - Clouds reflect shortwave radiation but also absorb longwave radiation






29. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






31. 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.






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






33. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






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






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






36. Over the Northern Hemisphere than the tropics.






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






38. Greenhouse gases are mixed in the ____






39. Where do greenhouse gases warm up the Earth?






40. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






41. 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.






42. 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






43. Set up in 1988 by WMO and UNEP.






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






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






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






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






48. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






49. US is responsible for ___ of the total CO2






50. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.