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

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






3. Like weighing oneself on the scale.






4. 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:






5. Set up in 1988 by WMO and UNEP.






6. Amount of light absorbed by atmosphere






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






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






9. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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






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






12. 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.






13. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






14. Radiation absorbed by atmospheric greenhouse gases?






15. Fresh snow and snow-covered sea ice may have an albedo higher than 80% - even when melting in the summer. Sea ice has a higher albedo and can absorb as little as 10% of the solar energy. On average - sea ice albedo is around 85%






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






17. Top layer of soil that thaws during the summer and freezes again during autumn. - Between 1 and 3 m thick.






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






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






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






21. Where does the ozone protect us?






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






23. 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






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






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






26. How much is the planet really warming?






27. 1. Keeps the ocean and the earth cooler 2. Coastal impacts of ice: prevents waves from eroding coastlines and protects from storms. 3. Ecological importance of ice: a. Most visibly for the many fish - birds - and mammal species that live in - on - or






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






29. Land Based Ecosystems retain ____ CO2.






30. 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






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






32. 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






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






34. Over the Northern Hemisphere than the tropics.






35. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






36. 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






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






38. 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.






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






40. Prolonged period of excessively hot weather - Which may be accompanied by high humidity.






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






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






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






44. 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.






45. 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






46. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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






48. High cloud has a _____ effect and cool cloud has a ____ effect






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






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