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. 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






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






3. 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:






4. 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






5. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






6. Antarctica - stratosphere - Sep-Oct






7. 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






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






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

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10. 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






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






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






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






14. 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.






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






16. Greenhouse gases are mixed in the ____






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






18. Grace - Tells us how much mass change we have - M - This is the measure of gravity (gives us the mass) - Directly measure mass change - Poor resolution






19. They saw a massive thinning of the ice where it enters into the ocean - This is due to the pronounced melting of the ice once it is in contact with the ocean. Melt rates of 25 m/year near the grounding lines and more than 10 m/year on average.






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






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






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






23. Water vapor - 36-70% - carbon dioxide - 9-26% - methane - 4-9% - ozone - 3-7%






24. Set up in 1988 by WMO and UNEP.






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






26. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)






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






28. 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!






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






30. 240 w/m squared






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






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






33. Over the Northern Hemisphere than the tropics.






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






35. 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






36. The large-scale ocean circulation that moves water between the deep and surface ocean which effects salinity and temperature change - Supplies heat to the polar-regions.






37. 85%






38. The Earth emits this.






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






40. Amount of light absorbed by surface






41. 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.






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






43. More common






44. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






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






46. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






47. Measures input and output.






48. 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.






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






50. 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