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 ________- inversion layer is more common in the Arctic






2. Permafrost- A frozen soil






3. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






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






5. Frozen +2 years - Few centimeters to 1500 m






6. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






7. 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:






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






9. 1.4 USA - 57 m total sea level equivalent






10. Greenhouse gases are mixed in the ____






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






12. Measures input and output.






13. ~10% of incident solar energy (albedo 90)






14. 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.






15. 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






16. Like weighing oneself on the scale.






17. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






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






19. A dome shaped cover of perennial ice and snow.






20. 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






21. 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






22. Precipitation intensity will rise ___ for every 1 OC of warming.






23. Really measures volume.






24. 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






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






26. Antarctica - stratosphere - Sep-Oct






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






28. 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.






29. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






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






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






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






34. 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.






35. Greenhouse gases are a ___ portion of the atmosphere






36. 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






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






38. SMB- mass balance due to processes that affect the surface of the ice sheet. Precipitation- evapotranspiration-runoff-blowing snow etc.






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






40. Land Based Ecosystems retain ____ CO2.






41. Forms in a mosaic of favoured locations.






42. Cooler water and drought conditions.






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






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






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






46. 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






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






48. 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.






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






50. Over the Northern Hemisphere than the tropics.