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






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






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






4. Where does the ozone protect us?






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






6. ~10% of incident solar energy (albedo 90)






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






8. The Earth emits this.






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






10. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






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






12. 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.






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






14. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






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






16. Greenhouse gases are a ___ portion of the atmosphere






17. 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.






18. Descending Air dry - Convection cells are wet.






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






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






21. 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:






22. 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






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






24. Forms in a mosaic of favoured locations.






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






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






27. 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






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






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






30. Longwave radiation - any radiation with a long wave will heat up quickly.






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






32. 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






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






34. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






35. CO2 - CH4 - O3 - H2O - N2O - CFCs






36. Amount of light absorbed by atmosphere






37. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






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






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






40. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






41. At the bottom of the ice sheets the temperature doesn't necessarily have to be above 0... it could _____ more easily because of the water






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






43. Taliks are found under lakes because of the ability of water to store and vertically transfer heat energy - Vertical extent of the taliks found under lakes is related to the depth and volume of the overlying water body.






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






45. Less frequent and weaker






46. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






47. Atmosphere retains ____ CO2






48. 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.






49. Amount of light absorbed by surface






50. 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.