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






2. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






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






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






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






6. Tundra absorbs more energy than ice and snow but less than scrubs and forest - and with those plants migrating towards the north - they will further contribute ot absorb more energy.






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






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






9. Amount of light absorbed by atmosphere






10. 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.






11. Where does the ozone protect us?






12. Warming- positive feedback - Cooling- negative feedback.






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






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






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






16. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






17. How often does El Nio occur?






18. Atmosphere retains ____ CO2






19. 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






20. Measures input and output.






21. 85%






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






23. Laser radar - H V - Long time series - high accuracy - Density






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






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






26. Ozone layer in high stratosphere (25-40 km altitude) absorbs about 95-99% of ultraviolet radiation.






27. US is responsible for ___ of the total CO2






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






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






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






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






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






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






34. 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






35. Descending Air dry - Convection cells are wet.






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






37. 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.






38. Amount of light absorbed by surface






39. 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.






40. Changes over time in the highest and lowest single temperature observed during a given month of the year.






41. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






42. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






43. 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






44. 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.






45. Water vapor means more water up in the clouds and less in the ground!






46. 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.






47. 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






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






49. The amount of light reflected by an object.






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