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






2. High vs low






3. Like weighing oneself on the scale.






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






5. 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






6. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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7. Melting Point decreases






8. How much is the planet really warming?






9. Greenhouse gases are mixed in the ____






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






11. Radiation that comes from the Sun - Visible light - 'near infrared' - ultraviolet radiation.






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






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






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






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






16. 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.






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






18. Ocean retains ____ CO2






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






20. 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.






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. Set up in 1988 by WMO and UNEP.






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






24. US is responsible for ___ of the total CO2






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






26. 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






27. How often does El Nio occur?






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






29. More common






30. Forms in a mosaic of favoured locations.






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






32. Due to a set of mutually reinforcing processes - climate change appears to be progressing in the arctic more quickly than in any other region on Earth.






33. Cooler water and drought conditions.






34. 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.






35. 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






36. 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!






37. 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






38. Fresh snow and snow-covered sea ice may have an albedo higher than 80% - even when melting in the summer. Sea ice has a higher albedo and can absorb as little as 10% of the solar energy. On average - sea ice albedo is around 85%






39. 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






40. 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.






41. Total absorbed solar radiation






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






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






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






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






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






47. Radiation absorbed by atmospheric greenhouse gases?






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






49. Changes over time in the highest and lowest single temperature observed during a given month of the year.






50. Where does the ozone protect us?