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. Frozen +2 years - Few centimeters to 1500 m






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






3. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






5. 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.






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






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






8. 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






9. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






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






11. Measures input and output.






12. High clouds are a ____ feedback; larger greenhouse warming - Clouds reflect shortwave radiation but also absorb longwave radiation






13. LW - SW - 55% absorbed by surface






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






15. Like weighing oneself on the scale.






16. Forms in a mosaic of favoured locations.






17. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






18. x7 smaller - 7m total sea level equivalent.






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






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






21. Volcanic eruptions - Sunspots - Wobbly Earth






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






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






24. Over the Northern Hemisphere than the tropics.






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






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






27. Antarctica - stratosphere - Sep-Oct






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






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






30. Clouds 40~90% - Vegetation 10~15%






31. A process whereby slabs of ice at the glacier margin mechanically fracture and detach from the main ice mass -






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






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






35. 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.






36. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






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






38. Land Based Ecosystems retain ____ CO2.






39. Extent 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.






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






41. 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






42. Set up in 1988 by WMO and UNEP.






43. ~10% of incident solar energy (albedo 90)






44. Greenhouse gases are mixed in the ____






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






46. 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






47. How much is the planet really warming?






48. Less frequent and weaker






49. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






50. O Unfrozen soil that stays within the permafrost.