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 Earth emits this.






2. Greenhouse gases are mixed in the ____






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






4. At the bottom of the ice sheets the temperature doesn't necessarily have to be above 0... it could _____ more easily because of the water






5. 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:






6. 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.






7. Rainy on yearly average. In these regions - rising air predominates.






8. Radiation absorbed by atmospheric greenhouse gases?






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

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10. Forms in a mosaic of favoured locations.






11. How much is the planet really warming?






12. 85%






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






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






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






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






17. 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.






18. 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.






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






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






21. Carbon dioxide - Methane - Ozone - Water Vapor - Few others - Most ___________________ are mixed in the troposphere (Except water vapor) - Water vapor is concentrated closer to the ground.






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






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






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






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






26. 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






27. 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






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






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






30. 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






31. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






32. 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






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






34. Amount of light absorbed by atmosphere






35. Warming- positive feedback - Cooling- negative feedback.






36. Where does the ozone protect us?






37. 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.






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






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






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






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






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






43. What can cause a change in the Earth's climate balance?






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






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






46. 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






47. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






48. 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.






49. 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






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