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. Forms in a mosaic of favoured locations.






2. 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






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






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






5. Descending Air dry - Convection cells are wet.






6. 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






7. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






9. The Earth emits this.






10. Top layer of soil that thaws during the summer and freezes again during autumn. - Between 1 and 3 m thick.






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






12. 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.






13. 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.






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






15. 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






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






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. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






19. How much is the planet really warming?






20. A process whereby slabs of ice at the glacier margin mechanically fracture and detach from the main ice mass -






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






22. Antarctica - stratosphere - Sep-Oct






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






24. 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






25. Ice flowing from the middle of Greenland to the edges and melting. 90 feet a day- speed that ice is moving.






26. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






27. How often does El Nio occur?






28. 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%






29. 240 w/m squared






30. Amount of light absorbed by surface






31. 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.






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






33. Laser radar - H V - Long time series - high accuracy - Density






34. Where does the ozone protect us?






35. 85%






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






37. The amount of light reflected by an object.






38. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -






39. US is responsible for ___ of the total CO2






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






41. 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






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






43. Less frequent and weaker






44. 1.4 USA - 57 m total sea level equivalent






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. Frozen +2 years - Few centimeters to 1500 m






47. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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48. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






49. Number of days that land among the hottest of all days in that month's long-term record.






50. Measures input and output.