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. LW - SW - 55% absorbed by surface






2. Total absorbed solar radiation






3. Amount of light absorbed by surface






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






5. 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






6. 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






7. Volcanic eruptions - Sunspots - Wobbly Earth






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






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






10. Higher temperature increases atmospheric water vapor @ global scale more water vapor in the air that causes nights to stay warmer.






11. 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.






12. ~10% of incident solar energy (albedo 90)






13. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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14. 10 : 1 - grounding ; surface






15. Melting Point decreases






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






17. 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:






18. 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






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






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






21. How much is the planet really warming?






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






23. O Unfrozen soil that stays within the permafrost.






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






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






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






27. 1. Keeps the ocean and the earth cooler 2. Coastal impacts of ice: prevents waves from eroding coastlines and protects from storms. 3. Ecological importance of ice: a. Most visibly for the many fish - birds - and mammal species that live in - on - or






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






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






30. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






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






32. 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






33. Antarctica - stratosphere - Sep-Oct






34. Where does the ozone protect us?






35. Reduction of Summer Sea- 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 - Snow and snow covered ice absorb 15% of incident solar energy - Ice absorbs 10% of inc






36. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






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






38. 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.






39. Where do greenhouse gases warm up the Earth?






40. US is responsible for ___ of the total CO2






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






42. High vs low






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






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






45. 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






46. 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






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






48. 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.






49. Less frequent and weaker






50. 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.






Can you answer 50 questions in 15 minutes?



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