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. 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






2. 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.






3. Like weighing oneself on the scale.






4. Amount of light absorbed by surface






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






6. By contrast reflects only about 7% of solar radiation (Albedo~7%) - absorbing 93%.






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






8. Is best viewed as a combination of...- Natural Variability - Associated with atmospheric circulation patterns - Growing Radiative Forcing - Associated with rising concentrations of atmospheric greenhouse gases - Strongly suggests a human influence.






9. Floating extensions are ice shelves - rivers of ice are ice streams or outlet glaciers - the junctions with the ocean are called the grounding line.






10. 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.






11. Where do greenhouse gases warm up the Earth?






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






13. 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






14. Atmosphere retains ____ CO2






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






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






17. Land Based Ecosystems retain ____ CO2.






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






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






20. Absolute thresholds - Monthly maximums and minimums - Threshold departures - Percentile departure - Atmospheric Water Vapor: More water vapor in the air - warmer nights!






21. Greenhouse gases are a ___ portion of the atmosphere






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






23. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






24. All processes that add snow or ice to a glacier or to flowing ice or snow cover.






25. Cooler water and drought conditions.






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






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






28. Forms in a mosaic of favoured locations.






29. Set up in 1988 by WMO and UNEP.






30. 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






31. Industrial product - 300 ppb (parts per billion)






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






33. 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.






34. Permafrost- A frozen soil






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






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






37. Where does the ozone protect us?






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






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






40. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






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






42. Volcanic eruptions - Sunspots - Wobbly Earth






43. 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.






44. 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.






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






46. More common






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






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






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






50. Number of days that exceed a given temperature