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






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






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






4. Where does the ozone protect us?






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






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






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






8. Less frequent and weaker






9. Melting Point decreases






10. The major distinction between the Protocol and the Convention is that while the Convention encouraged industrialized countries to stabilize GHG emissions - the Protocol commits them to do so.






11. Amount of light absorbed by surface






12. Precipitation extremes appear to generally increase across the planet at especially high latitudes.






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






14. Over the Northern Hemisphere than the tropics.






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






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






17. 240 w/m squared






18. Atmospheric Cooling - Both negative (stabilizing) feedbacks - It is not happening now - but it has happened in the past - Ice-albedo feedback was the dominant feedback during the ice ages.






19. Rainy on yearly average. In these regions - rising air predominates.






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






21. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






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






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






24. 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






25. Betts et al found that: if CO-2 __________ this has a physiological effect on plant transpiration increased simulated runoff by 6% b. How? i. More CO2 1. Plants pores open less 2. This reduces transpiration 3. More water in the land surface






26. 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.






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






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

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






30. 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






31. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






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






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






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






35. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century






36. Nitrogen (N2 78%) and Oxygen (O2 21%) - Their linear 2 atom molecular structure






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






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






39. The Earth emits this.






40. ~10% of incident solar energy (albedo 90)






41. 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.






42. How much is the planet really warming?






43. 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.






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






45. Greenhouse gases are mixed in the ____






46. This is the total mass change - difference between input and outputs—snow accumulation-ablation.






47. 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






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






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






50. Sea ice extent in Antarctica is rapidly reducing. Seasonal variability. People - Animals and Ice