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






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






3. 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






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






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






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






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






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






9. Land Based Ecosystems retain ____ CO2.






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






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






12. How much is the planet really warming?






13. Over the Northern Hemisphere than the tropics.






14. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






15. Descending Air dry - Convection cells are wet.






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






17. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






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






19. The last portion of a glacier grounded to bedrock - after this line there are ice shelves.






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






21. x7 smaller - 7m total sea level equivalent.






22. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






23. 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.






24. Clouds 40~90% - Vegetation 10~15%






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






26. Holds unique and key information - Are highly interconnected - Respond and drive climate change - Are the largest freshwater reservoirs of the planet - Ice cores tell us that in climate records - nothing is regular and ice sheet plays major role.






27. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






28. CO2 GHG forcing - H2O - dominant/major GHG






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






30. More common






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






32. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






35. 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






36. Ocean retains ____ CO2






37. The Earth emits this.






38. 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






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






40. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






41. ~10% of incident solar energy (albedo 90)






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






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






44. Permafrost- A frozen soil






45. Greenhouse gases are mixed in the ____






46. Cooler water and drought conditions.






47. 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) -






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






49. 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






50. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.