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 order of 1 m/year. Melting is ten times more.






2. The Earth emits this.






3. Measures input and output.






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






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






6. 10 : 1 - grounding ; surface






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






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






9. CO2 - CH4 - O3 - H2O - N2O - CFCs






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






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






12. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






13. Same amount of H2O - Mass does not change - Density of ice < density of water - Volume of ice > volume of water






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






15. 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






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






17. 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.






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






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






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






21. 1.4 USA - 57 m total sea level equivalent






22. Grace - Tells us how much mass change we have - M - This is the measure of gravity (gives us the mass) - Directly measure mass change - Poor resolution






23. 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






24. On a clear cold day - the thin layer of air hugging the ground is called inversion. This layer is much cooler than the air a few hundred meters above it.






25. Ocean retains ____ CO2






26. High vs low






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






28. O Unfrozen soil that stays within the permafrost.






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






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






31. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






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






33. 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






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

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






36. 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.






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






38. 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






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






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






41. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






42. More common






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






44. 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






45. 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:






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






47. 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.






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






49. Radiation that comes from the Sun - Visible light - 'near infrared' - ultraviolet radiation.






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