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. Radiation absorbed by atmospheric greenhouse gases?






2. Where does the ozone protect us?






3. 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:






4. 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






5. 23 -45 degrees. The Larger the tilt the larger the variability of the seasons.

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6. Forms in a mosaic of favoured locations.






7. 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






8. 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






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






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






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






12. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface






13. 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






14. Atmospheric Cooling - Both negative (stabilizing) feedbacks - It is not happening now - but it has happened in the past - Ice-albedo feedback was the dominant feedback during the ice ages.






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






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






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






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






19. 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






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






21. ~15% of incident solar energy (albedo 85)






22. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






23. Number of days that exceed a given temperature






24. 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






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






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






27. 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






28. US is responsible for ___ of the total CO2






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






30. Land Based Ecosystems retain ____ CO2.






31. 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






32. Melting Point decreases






33. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.






34. Volcanic eruptions - Sunspots - Wobbly Earth






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






36. 1.4 USA - 57 m total sea level equivalent






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






38. Is best viewed as a combination of...- Natural Variability - Associated with atmospheric circulation patterns - Growing Radiative Forcing - Associated with rising concentrations of atmospheric greenhouse gases - Strongly suggests a human influence.






39. The amount of light reflected by an object.






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

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41. 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) -






42. Like weighing oneself on the scale.






43. Ozone layer in high stratosphere (25-40 km altitude) absorbs about 95-99% of ultraviolet radiation.






44. How much is the planet really warming?






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






46. Is defined usually on the basis of the degree of dryness (in comparison to some 'normal' or average amount






47. 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.






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






49. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






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