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. Land Based Ecosystems retain ____ CO2.






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






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






4. Reduction of snow and ice cover - Changes in atmospheric circulation.






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






6. More common






7. Radiation absorbed by atmospheric greenhouse gases?






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






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






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






11. 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.






12. Atmosphere retains ____ CO2






13. 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






14. 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






15. 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.






16. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






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






18. 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.






19. 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






20. 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






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






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






23. 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.






24. 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%






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






26. 10 : 1 - grounding ; surface






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






28. 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






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






30. 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






31. Where do greenhouse gases warm up the Earth?






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






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






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






35. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






36. How much is the planet really warming?






37. Most of the deserts are around 30 N and 30 S - where sinking air predominates






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






39. 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.






40. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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41. ~15% of incident solar energy (albedo 85)






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






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






44. 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.






45. 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.






46. Ice flowing from the middle of Greenland to the edges and melting. 90 feet a day- speed that ice is moving.






47. Long time series started in the '70s and yielding good data in the '90s - Detects elevation with high accuracy: 10 cm precision (laser) to 1 m (radar) - 2/3 Gravity Surveys (GRACE) - Weighing the total mass every 30 days - Direct monthly estimate






48. Total absorbed solar radiation






49. 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






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