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






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






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






4. Ice sheets have a very ____ Albedo






5. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






6. Melting Point decreases






7. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






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






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






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






11. 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%






12. Less frequent and weaker






13. Like weighing oneself on the scale.






14. Ocean retains ____ CO2






15. 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.






16. Number of days when temperatures climb above average by a fixed amount.






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






18. How much is the planet really warming?






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






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






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






22. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






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






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






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






26. 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






27. 10 : 1 - grounding ; surface






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






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






30. Atmosphere retains ____ CO2






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






32. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






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






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






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






36. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






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






38. Warming- positive feedback - Cooling- negative feedback.






39. In troposphere = greenhouse warming gas - However - most of it is in the stratosphere.






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






41. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






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






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






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






45. Is unfrozen ground that is exposed to the ground surface and to a larger mass of unfrozen ground beneath it.






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






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






48. 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.






49. he increase of ozone concentration in the atmosphere helps ____ our planet






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