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






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






3. Radiation absorbed by atmospheric greenhouse gases?






4. 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






5. O Unfrozen soil that stays within the permafrost.






6. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






7. South polar vortex - Temperatures drop below 80O Celsius in the lower stratosphere - At these temperatures the chemicals in the stratosphere freeze and form Polar Stratospheric Clouds (PSCS) - These increase the concentration of CFCs in turn destroyi






8. x7 smaller - 7m total sea level equivalent.






9. The buoyant force is equal to the weight of the displaced water.

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






11. 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.






12. 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






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






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






15. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






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






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






18. Volcanic eruptions - Sunspots - Wobbly Earth






19. A naturally or artificially caused decrease in the thickness and/or areal extent of permafrost - It is caused by the deepening fo the active layer and the thawing of the adjacent permafrost.






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






21. Arctic troposphere is thinner (8-10 km) than the tropics...The depth of the atmospheric layer is much shallower in the Arctic - It takes less energy to warm the Arctic rather than the Tropics - Same as heating an apartment vs. a house






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






23. ~10% of incident solar energy (albedo 90)






24. 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






25. More common






26. 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.






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






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






29. 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






30. Occurs when there is not enough water available for a particular crop to grow at a particular time.Typically seen after!meteorological drought (when rainfall decreases) but before a hydrological drought






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






32. Top layer of soil that thaws during the summer and freezes again during autumn. - Between 1 and 3 m thick.






33. 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:






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






35. Greenhouse gases are mixed in the ____






36. Forms in a mosaic of favoured locations.






37. Where does the ozone protect us?






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






39. 10 : 1 - grounding ; surface






40. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






41. 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.






42. 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.






43. Extent 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.






44. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






45. The Earth emits this.






46. 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






47. Descending Air dry - Convection cells are wet.






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






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






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