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






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






3. Warming- positive feedback - Cooling- negative feedback.






4. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






6. Ocean retains ____ CO2






7. Where do greenhouse gases warm up the Earth?






8. Total absorbed solar radiation






9. Average molecular life span is less than 10 years - Major sources: Wetlands and oceans - Raising cattle and landfills.






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






11. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






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






13. 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.






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






15. 1.4 USA - 57 m total sea level equivalent






16. Positive Albedo Feedback - increase in temperature melts ice and snow reduces albedo increases temperature melts ice and snow reduces albedo... ETC






17. Set up in 1988 by WMO and UNEP.






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






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. 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.






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






22. 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






23. Radiation absorbed by atmospheric greenhouse gases?






24. 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






25. 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






26. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






27. 240 w/m squared






28. US is responsible for ___ of the total CO2






29. Really measures volume.






30. Like weighing oneself on the scale.






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






32. Forms from frozen ocean water - Floats on the ocean surface - Grows over the winter - melts in the summer






33. 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






34. 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.






35. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






36. Laser radar - H V - Long time series - high accuracy - Density






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






38. 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






39. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






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






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






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






43. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






44. How much is the planet really warming?






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






46. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






47. 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.






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






49. 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






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






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