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. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






3. 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%






4. 1.4 USA - 57 m total sea level equivalent






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






6. 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






7. Antarctica - stratosphere - Sep-Oct






8. Amount of light absorbed by atmosphere






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


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






11. O Unfrozen soil that stays within the permafrost.






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






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






14. Sea ice extent in Antarctica is rapidly reducing. Seasonal variability. People - Animals and Ice






15. 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.






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






17. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






18. Unfrozen ground that is found within a mass of permafrost






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






20. ~10% of incident solar energy (albedo 90)






21. In _______ - the inversions are less frequent and weaker in the Arctic.






22. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






23. 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






24. Over the Northern Hemisphere than the tropics.






25. Greenhouse gases are mixed in the ____






26. 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.






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






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






29. Help darkens the snow and ice surface - increasing the amount of energy that is absorbed.






30. Arctic troposphere is thinner (8-10 km) than the tropics...The depth of the atmospheric layer is much shallower in the Arctic - It takes less energy to warm the Arctic rather than the Tropics - Same as heating an apartment vs. a house






31. 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






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






33. How often does El Nio occur?






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






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






36. 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:






37. Floating extensions are ice shelves - rivers of ice are ice streams or outlet glaciers - the junctions with the ocean are called the grounding line.






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






39. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






40. Summer increase in cloud cover - Winter decrease in cloud cover.


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






42. More common






43. 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.






44. The air can hold less water vapor - Consequently - less water can be evaporated in the air - and only a small portion of energy is used in this process - Most of the energy that reaches the Arctic goes directly into warming the air






45. Greenhouse gases are a ___ portion of the atmosphere






46. Permafrost- A frozen soil






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






48. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






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






50. 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.