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






2. 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) -






3. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






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






5. Longwave radiation - any radiation with a long wave will heat up quickly.






6. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






7. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






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






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






10. 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






11. Atmosphere retains ____ CO2






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






13. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






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






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






16. 85%






17. Troposphere - Stratosphere (Ozone Layer) - Mesosphere - Ionosphere






18. 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






19. CO2 - CH4 - O3 - H2O - N2O - CFCs






20. Is best viewed as a combination of...- Natural Variability - Associated with atmospheric circulation patterns - Growing Radiative Forcing - Associated with rising concentrations of atmospheric greenhouse gases - Strongly suggests a human influence.






21. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






22. Measures input and output.






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






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






25. Greenhouse gases are mixed in the ____






26. A thick - floating slab of freshwater ice extending from coast to coast.






27. Like weighing oneself on the scale.






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






29. Long time series started in the '70s and yielding good data in the '90s - Detects elevation with high accuracy: 10 cm precision (laser) to 1 m (radar) - 2/3 Gravity Surveys (GRACE) - Weighing the total mass every 30 days - Direct monthly estimate






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






31. Radiation absorbed by atmospheric greenhouse gases?






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






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






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

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35. ~15% of incident solar energy (albedo 85)






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






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






38. 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:






39. Really measures volume.






40. ~10% of incident solar energy (albedo 90)






41. 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.






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






43. Ocean retains ____ CO2






44. The land-surface configuration that results from the melting of ground ice in a region where permafrost degrades is called Thermokarst.






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






46. 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.






47. 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!






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






49. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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