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. x7 smaller - 7m total sea level equivalent.






2. 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.






3. The Earth emits this.






4. 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






5. Total absorbed solar radiation






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






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






8. Greenhouse gases are a ___ portion of the atmosphere






9. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv






10. Thawing permafrost weakens coastal lands. Risk of flooding in coastal wetlands. Pollution and toxins locked in the snow and ice will be released.






11. O The amount of energy moving in the form of photons or other elementary particles at a certain distance from the source per unit of area per second. Area/second






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






13. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






14. Reduction of snow and ice cover - Changes in atmospheric circulation.






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






16. When meltwater seeps through a flowing glacier - it can lubricate the base and hasten the glacier's seaward flow.






17. Amount of light absorbed by atmosphere






18. 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.






19. More common






20. Measures input and output.






21. Ice sheets have a very ____ Albedo






22. Fresh snow and snow-covered sea ice may have an albedo higher than 80% - even when melting in the summer. Sea ice has a higher albedo and can absorb as little as 10% of the solar energy. On average - sea ice albedo is around 85%






23. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






24. Ocean retains ____ CO2






25. Taliks are found under lakes because of the ability of water to store and vertically transfer heat energy - Vertical extent of the taliks found under lakes is related to the depth and volume of the overlying water body.






26. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)






27. Number of days that exceed a given temperature






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






29. ~15% of incident solar energy (albedo 85)






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






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






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






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






34. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






37. The amount of light reflected by an object.






38. How often does El Nio occur?






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






40. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






41. 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






42. Forms from frozen ocean water - Floats on the ocean surface - Grows over the winter - melts in the summer






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






44. Amount of light absorbed by surface






45. 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.






46. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






47. How much is the planet really warming?






48. 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






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






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