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






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






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






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






5. 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.






6. 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






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






8. Set up in 1988 by WMO and UNEP.






9. 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:






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






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






12. ~10% of incident solar energy (albedo 90)






13. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






14. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.






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






16. Tundra absorbs more energy than ice and snow but less than scrubs and forest - and with those plants migrating towards the north - they will further contribute ot absorb more energy.






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






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






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






20. 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.






21. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






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






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






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






27. 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






28. How often does El Nio occur?






29. The heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.






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






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






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






33. Where does the ozone protect us?






34. Forms in a mosaic of favoured locations.






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






36. Ice melting rapidly? What type causes sea level to rise? What have been the main contributors to sea level rise so far? What are the impacts of melting ice? - On nature - On humans






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






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






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






40. 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.






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






42. Amount of light absorbed by surface






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






44. 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.






45. Descending Air dry - Convection cells are wet.






46. 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.






47. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






48. O Unfrozen soil that stays within the permafrost.






49. Really measures volume.






50. 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