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






2. The past climate...for this reason - both keep good records of climate change.






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






4. Soil at or below the freezing point of water for two or more years - Can be: Terrestrial - Subsea - Can be: Continuous: exists across a landscape as an unbroken layer. More than 90% is frozen - Discontinuous






5. Same as heating an apartment v home - Thinner atmosphere than tropics; warms faster.






6. Ozone layer in high stratosphere (25-40 km altitude) absorbs about 95-99% of ultraviolet radiation.






7. 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






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






9. 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.






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






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






12. 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






13. 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






14. High vs low






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






16. Volcanic eruptions - Sunspots - Wobbly Earth






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






18. Ice sheets have a very ____ Albedo






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






20. Ocean retains ____ CO2






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






22. The amount of light reflected by an object.






23. Really measures volume.






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






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






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






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






28. Where do greenhouse gases warm up the Earth?






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






30. Land Based Ecosystems retain ____ CO2.






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






32. 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






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






34. Where does the ozone protect us?






35. Set up in 1988 by WMO and UNEP.






36. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century






37. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






38. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.






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






40. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






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






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






43. 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






44. The order of 1 m/year. Melting is ten times more.






45. 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






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






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






48. Like weighing oneself on the scale.






49. CO2 GHG forcing - H2O - dominant/major GHG






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