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. Unfrozen ground that is found within a mass of permafrost






2. Amount of light absorbed by surface






3. US is responsible for ___ of the total CO2






4. 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






5. Antarctica - stratosphere - Sep-Oct






6. The heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.






7. How much is the planet really warming?






8. 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.






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






10. 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:






11. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






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






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

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14. 1.4 USA - 57 m total sea level equivalent






15. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






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






17. High cloud has a _____ effect and cool cloud has a ____ effect






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






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






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






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






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






23. Like weighing oneself on the scale.






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






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






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






27. Is not an externally imposed perturbation to the climate system.






28. Closed talik can develop when lakes fill in with sediment and become deposits of dead plant material (bog).






29. 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.






30. South polar vortex - Temperatures drop below 80O Celsius in the lower stratosphere - At these temperatures the chemicals in the stratosphere freeze and form Polar Stratospheric Clouds (PSCS) - These increase the concentration of CFCs in turn destroyi






31. Prolonged period of excessively hot weather - Which may be accompanied by high humidity.






32. A process whereby slabs of ice at the glacier margin mechanically fracture and detach from the main ice mass -






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






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






35. 85%






36. Greenhouse gases are mixed in the ____






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






38. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






39. 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.






40. 10 : 1 - grounding ; surface






41. Total absorbed solar radiation






42. The Earth emits this.






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






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






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






46. Water vapor - 36-70% - carbon dioxide - 9-26% - methane - 4-9% - ozone - 3-7%






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






48. High vs low






49. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






50. Melting Point decreases