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. 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






2. Greenhouse gases are mixed in the ____






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






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






5. Sea ice extent in Antarctica is rapidly reducing. Seasonal variability. People - Animals and Ice






6. 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






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






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






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






10. O Unfrozen soil that stays within the permafrost.






11. 10 : 1 - grounding ; surface






12. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






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






14. Greenhouse gases are a ___ portion of the atmosphere






15. Much of the Arctic is overlain by snow and sea ice (land ice and sea ice) - It makes warming a much bigger deal in the Arctic






16. Positive Albedo Feedback - increase in temperature melts ice and snow reduces albedo increases temperature melts ice and snow reduces albedo... ETC






17. Really measures volume.






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






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






20. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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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. Radiation absorbed by atmospheric greenhouse gases?






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






24. 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.






25. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






26. 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.






27. Volcanic eruptions - Sunspots - Wobbly Earth






28. The amount of light reflected by an object.






29. Where does the ozone protect us?






30. More common






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






32. ~10% of incident solar energy (albedo 90)






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






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






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






36. 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.






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. Atmosphere retains ____ CO2






39. 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






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






41. The Earth emits this.






42. In average: +1% in respect to 100 years ago.






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






44. Set up in 1988 by WMO and UNEP.






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






46. In ________- inversion layer is more common in the Arctic






47. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






48. Prolonged period of excessively hot weather - Which may be accompanied by high humidity.






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






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