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. 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






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






3. 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.






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






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






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






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






8. Volcanic eruptions - Sunspots - Wobbly Earth






9. The amount of light reflected by an object.






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






11. Permafrost- A frozen soil






12. 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.






13. 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.






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






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






16. O Unfrozen soil that stays within the permafrost.






17. 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






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






19. Antarctica - stratosphere - Sep-Oct






20. The major distinction between the Protocol and the Convention is that while the Convention encouraged industrialized countries to stabilize GHG emissions - the Protocol commits them to do so.






21. Where does the ozone protect us?






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






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






24. 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






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






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






27. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






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






29. 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






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






31. 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






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






33. Melting Point decreases






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






35. 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






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






37. The last portion of a glacier grounded to bedrock - after this line there are ice shelves.






38. Radiation that comes from the Sun - Visible light - 'near infrared' - ultraviolet radiation.






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






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






41. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






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






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






44. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






45. 10 : 1 - grounding ; surface






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






47. 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






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






49. 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.






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