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






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






3. Unfrozen ground that is found within a mass of permafrost






4. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






6. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






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






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






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






11. Longwave radiation - any radiation with a long wave will heat up quickly.






12. 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.






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






14. Wet gets _____ - dry gets ____ - Wet - 50ON (sub polar) Canada - N Europe - Russia - Tropical area- monsoon (rainforest) - Drier - Subtropics - Australia - S. Africa - Mediterranean - Caribbean - Mexico - SW US






15. Average molecular life span is less than 10 years - Major sources: Wetlands and oceans - Raising cattle and landfills.






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






17. Ice sheets have a very ____ Albedo






18. Less frequent and weaker






19. Descending Air dry - Convection cells are wet.






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






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. Volcanic eruptions - Sunspots - Wobbly Earth






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






24. Is not an externally imposed perturbation to the climate system.






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






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






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






28. ~10% of incident solar energy (albedo 90)






29. 240 w/m squared






30. Troposphere - Stratosphere (Ozone Layer) - Mesosphere - Ionosphere






31. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






32. Greenhouse gases are a ___ portion of the atmosphere






33. 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.






34. 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






35. 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






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






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






38. Radiation absorbed by atmospheric greenhouse gases?






39. 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.






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






41. 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






42. 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.






43. Greenhouse gases are mixed in the ____






44. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






45. Where does the ozone protect us?






46. 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.






47. Most of the deserts are around 30 N and 30 S - where sinking air predominates






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






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






50. 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.