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. Amount of light absorbed by atmosphere






2. Where do greenhouse gases warm up the Earth?






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






4. 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:






5. 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






6. 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






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






8. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






9. 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.






10. 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.






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






12. 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%






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






14. 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.






15. 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






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






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






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






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






21. 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.






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






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






24. Descending Air dry - Convection cells are wet.






25. 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!






26. 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






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






28. 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.






29. Number of days when temperatures climb above average by a fixed amount.






30. Ocean retains ____ CO2






31. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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






33. Reduction of Summer Sea- 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 - Snow and snow covered ice absorb 15% of incident solar energy - Ice absorbs 10% of inc






34. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






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






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






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






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






39. 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






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






41. Ice sheets have a very ____ Albedo






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






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






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






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

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47. O Unfrozen soil that stays within the permafrost.






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






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






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