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






2. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






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






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






5. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






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






7. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






8. 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) -






9. LW - SW - 55% absorbed by surface






10. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






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






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






13. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






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






15. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






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






17. 1.4 USA - 57 m total sea level equivalent






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






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






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






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






22. Cooler water and drought conditions.






23. O Unfrozen soil that stays within the permafrost.






24. Water vapor means more water up in the clouds and less in the ground!






25. 10 : 1 - grounding ; surface






26. 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






27. Volcanic eruptions - Sunspots - Wobbly Earth






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






29. Holds unique and key information - Are highly interconnected - Respond and drive climate change - Are the largest freshwater reservoirs of the planet - Ice cores tell us that in climate records - nothing is regular and ice sheet plays major role.






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






31. Ice sheets have a very ____ Albedo






32. Carbon dioxide - Methane - Ozone - Water Vapor - Few others - Most ___________________ are mixed in the troposphere (Except water vapor) - Water vapor is concentrated closer to the ground.






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






34. Absolute thresholds - Monthly maximums and minimums - Threshold departures - Percentile departure - Atmospheric Water Vapor: More water vapor in the air - warmer nights!






35. Melting Point decreases






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






37. 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.






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






39. Less frequent and weaker






40. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






41. 240 w/m squared






42. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv






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






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






45. What can cause a change in the Earth's climate balance?






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






47. Over the Northern Hemisphere than the tropics.






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






49. 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.






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