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. Frozen +2 years - Few centimeters to 1500 m






2. 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






3. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






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






5. Descending Air dry - Convection cells are wet.






6. More common






7. Summer increase in cloud cover - Winter decrease in cloud cover.

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8. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






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






10. he increase of ozone concentration in the atmosphere helps ____ our planet






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






12. Help darkens the snow and ice surface - increasing the amount of energy that is absorbed.






13. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






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






15. Antarctica - stratosphere - Sep-Oct






16. Forms in a mosaic of favoured locations.






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






18. Amount of light absorbed by atmosphere






19. ~15% of incident solar energy (albedo 85)






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






21. 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:






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






23. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






24. Ocean retains ____ CO2






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






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






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






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






29. 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






30. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






31. Measures input and output.






32. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






33. 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.






34. The Earth emits this.






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






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






37. 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.






38. 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






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






40. Surface Mass Balance is of the order of _____ melting is ____ times more.






41. Industrial product - 300 ppb (parts per billion)






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






43. Sea ice - Continental ice sheets - Permafrost (frozen soil) - Mountain glaciers - Snow cover






44. 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






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






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

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






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






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






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