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






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






3. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






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






5. The large-scale ocean circulation that moves water between the deep and surface ocean which effects salinity and temperature change - Supplies heat to the polar-regions.






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






7. Atmosphere retains ____ CO2






8. Ice sheets have a very ____ Albedo






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






10. Where does the ozone protect us?






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






12. Set up in 1988 by WMO and UNEP.






13. 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






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






15. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






16. 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






17. O Climate change in the Arctic is occurring now - Changes have been huge already






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






19. Low clouds are a ____ feedback; they will reflect more sunlight. Clouds reflect shortwave radiation but also absorb longwave radiation






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






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






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






23. Same amount of H2O - Mass does not change - Density of ice < density of water - Volume of ice > volume of water






24. 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






25. Is not an externally imposed perturbation to the climate system.






26. Amount of light absorbed by surface






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






28. 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






29. 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.






30. 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






31. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






32. 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!






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






34. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






35. 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.






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






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






38. More common






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






40. Land Based Ecosystems retain ____ CO2.






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






42. 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






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






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






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






46. Thawing permafrost weakens coastal lands. Risk of flooding in coastal wetlands. Pollution and toxins locked in the snow and ice will be released.






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






48. Betts et al found that: if CO-2 __________ this has a physiological effect on plant transpiration increased simulated runoff by 6% b. How? i. More CO2 1. Plants pores open less 2. This reduces transpiration 3. More water in the land surface






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






50. On a clear cold day - the thin layer of air hugging the ground is called inversion. This layer is much cooler than the air a few hundred meters above it.