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. Longwave radiation - any radiation with a long wave will heat up quickly.






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






4. 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






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






6. Clouds 40~90% - Vegetation 10~15%






7. 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.






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






9. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






10. A dome shaped cover of perennial ice and snow.






11. 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.






12. Over the past century what has happened to the Earth's temperature?






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






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






17. Long time series started in the '70s and yielding good data in the '90s - Detects elevation with high accuracy: 10 cm precision (laser) to 1 m (radar) - 2/3 Gravity Surveys (GRACE) - Weighing the total mass every 30 days - Direct monthly estimate






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






19. ~10% of incident solar energy (albedo 90)






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






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






22. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






23. 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






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






25. High vs low






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. Frozen +2 years - Few centimeters to 1500 m






28. Really measures volume.






29. 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






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






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






32. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






33. A thick - floating slab of freshwater ice extending from coast to coast.






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






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






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






37. 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.






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






39. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






40. 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.






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






42. 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.






43. 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






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






45. How often does El Nio occur?






46. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


47. Cooler water and drought conditions.






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






49. Warming- positive feedback - Cooling- negative feedback.






50. Ocean retains ____ CO2