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






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






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






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






5. The amount of light reflected by an object.






6. Volcanic eruptions - Sunspots - Wobbly Earth






7. 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






8. Greenhouse gases are a ___ portion of the atmosphere






9. ~15% of incident solar energy (albedo 85)






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






12. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






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






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






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






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






17. 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






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






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






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






21. The buoyant force is equal to the weight of the displaced water.

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22. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






23. Less frequent and weaker






24. 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.






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






26. The Earth emits this.






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






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






29. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






30. Rainy on yearly average. In these regions - rising air predominates.






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






32. 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






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






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






35. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






36. Ocean retains ____ CO2






37. Amount of light absorbed by atmosphere






38. 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.






39. Amount of light absorbed by surface






40. 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.






41. 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.






42. South polar vortex - Temperatures drop below 80O Celsius in the lower stratosphere - At these temperatures the chemicals in the stratosphere freeze and form Polar Stratospheric Clouds (PSCS) - These increase the concentration of CFCs in turn destroyi






43. 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






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






45. 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






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






47. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






48. Where does the ozone protect us?






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






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