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. Radiation absorbed by atmospheric greenhouse gases?






2. 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.






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






4. 1.4 USA - 57 m total sea level equivalent






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






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






7. 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






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


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






10. 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.






11. 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.






12. Number of days that exceed a given temperature






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






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






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






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






17. The amount of light reflected by an object.






18. A thick - floating slab of freshwater ice extending from coast to coast.






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






20. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






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






22. 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






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






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






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






27. LW - SW - 55% absorbed by surface






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






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






30. 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.






31. 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






32. Ice sheets have a very ____ Albedo






33. 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!






34. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






36. The high pressure decreases the melting point and favors melting - Melt water being less dense rises along the water column along the ice shelf bottom and may either escape the cavity or refreeze at some intermediate depth. Melting point decreases:






37. Over the Northern Hemisphere than the tropics.






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


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






40. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






41. 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.






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






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






44. Warming- positive feedback - Cooling- negative feedback.






45. 85%






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






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






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






49. Industrial product - 300 ppb (parts per billion)






50. Set up in 1988 by WMO and UNEP.