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. Number of days that land among the hottest of all days in that month's long-term record.






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






3. Volcanic eruptions - Sunspots - Wobbly Earth






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






5. 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






6. The amount of light reflected by an object.






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






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






9. On a clear cold day - the thin layer of air hugging the ground is called inversion. This layer is much cooler than the air a few hundred meters above it.






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






11. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






12. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






13. Rainy on yearly average. In these regions - rising air predominates.






14. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






15. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






16. 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.






17. Number of days when temperatures climb above average by a fixed amount.






18. Cooler water and drought conditions.






19. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






20. O Unfrozen soil that stays within the permafrost.






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






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






23. Measures input and output.






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

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






26. Greenhouse gases are mixed in the ____






27. Ice sheets have a very ____ Albedo






28. 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) -






29. 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.






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






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






32. 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.






33. 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.






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






35. All processes that add snow or ice to a glacier or to flowing ice or snow cover.






36. Massive cooldown has allowed colder conditions to persist leading to cfcs stabilizing leading to ozone depletion. Later - more warming will lead to more moisture in the air which will lead to more snowfall!






37. More common






38. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)






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






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






41. Melting Point decreases






42. O Climate change in the Arctic is occurring now - Changes have been huge already






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






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






45. 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:






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






47. 1.4 USA - 57 m total sea level equivalent






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






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






50. Where do greenhouse gases warm up the Earth?