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






2. Sea ice - Continental ice sheets - Permafrost (frozen soil) - Mountain glaciers - Snow cover






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






4. 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.






5. 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:






6. How much is the planet really warming?






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






8. Antarctica - stratosphere - Sep-Oct






9. 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






10. 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






11. O The amount of energy moving in the form of photons or other elementary particles at a certain distance from the source per unit of area per second. Area/second






12. 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.






13. Forms in a mosaic of favoured locations.






14. Melting Point decreases






15. 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






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






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






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






19. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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






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






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






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. Ice sheets have a very ____ Albedo






25. 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.






26. 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.






27. 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






28. The Earth emits this.






29. Rain is getting harder and the rain is lasting longer since the past couple of decades and will continue for that amount.






30. 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.






31. 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






32. Where does the ozone protect us?






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






34. Hydrological drought is associated with the effect of low rainfall on water levels in rivers -!reservoirs -!lakes and aquifers.






35. US is responsible for ___ of the total CO2






36. 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.






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






38. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






39. 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.






40. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






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






43. Permafrost- A frozen soil






44. At the bottom of the ice sheets the temperature doesn't necessarily have to be above 0... it could _____ more easily because of the water






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






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






47. Warming- positive feedback - Cooling- negative feedback.






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






49. 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.






50. Precipitation intensity will rise ___ for every 1 OC of warming.