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






2. 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






3. Occurs when there is not enough water available for a particular crop to grow at a particular time.Typically seen after!meteorological drought (when rainfall decreases) but before a hydrological drought






4. SMB- mass balance due to processes that affect the surface of the ice sheet. Precipitation- evapotranspiration-runoff-blowing snow etc.






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






6. Melting Point decreases






7. 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






8. Deep tropics between 15O N and 15 O S are quite rainy on yearly average. In these regions - rising air predominates.






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






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

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11. How much is the planet really warming?






12. In troposphere = greenhouse warming gas - However - most of it is in the stratosphere.






13. 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:






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






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






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






17. US is responsible for ___ of the total CO2






18. Total absorbed solar radiation






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






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






21. What can cause a change in the Earth's climate balance?






22. Land Based Ecosystems retain ____ CO2.






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






24. The transition of a substance from the solid phase directly to the vapor phase - or vice versa - without passing through an intermediate liquid phase.






25. 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






26. Radiation absorbed by atmospheric greenhouse gases?






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






28. 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.






29. Summer increase in cloud cover - Winter decrease in cloud cover.

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30. By contrast reflects only about 7% of solar radiation (Albedo~7%) - absorbing 93%.






31. Amount of light absorbed by atmosphere






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






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






34. Number of days that exceed a given temperature






35. 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.






36. By contrast reflects only about 7% of solar radiation (Albedo~7%) - absorbing 93%.






37. High vs low






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






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






40. Set up in 1988 by WMO and UNEP.






41. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






42. Antarctica - stratosphere - Sep-Oct






43. 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






44. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






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






46. Ocean retains ____ CO2






47. Unfrozen ground that is found within a mass of permafrost






48. 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






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






50. This is the total mass change - difference between input and outputs—snow accumulation-ablation.