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






2. Greenhouse gases are mixed in the ____






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






4. Poor resolution (200-400 km) does not allow us to distinguish glaciers and basins.






5. The amount of light reflected by an object.






6. LW - SW - 55% absorbed by surface






7. Permafrost- A frozen soil






8. 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






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






10. 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






11. 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






12. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






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






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






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






16. Cooler water and drought conditions.






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






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






19. The Earth emits this.






20. Amount of light absorbed by atmosphere






21. 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.






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






23. Number of days that exceed a given temperature






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






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






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






28. How much is the planet really warming?






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






30. Closed talik can develop when lakes fill in with sediment and become deposits of dead plant material (bog).






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






32. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






33. Antarctica - stratosphere - Sep-Oct






34. ~15% of incident solar energy (albedo 85)






35. Massive cooldown has allowed colder conditions to persist leading to cfcs stabilizing leading to ozone depletion. Later - more warming will lead to more moisture in the air which will lead to more snowfall!






36. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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






38. 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.






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






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






41. 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






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






43. Atmosphere retains ____ CO2






44. InSAR - +snow/-ice loss - ice dynamics - requires a lot of data.






45. 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






46. 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






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






48. Under higher pressure the melting point decreases ____ - The pressure comes from the weight of the ice shelf.






49. Over the Northern Hemisphere than the tropics.






50. Where do greenhouse gases warm up the Earth?