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






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






3. High vs low






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






5. Concentration of 380 ppmv - Have risen about 40% - Preindustrial~ 270~280 ppmv






6. More common






7. Just remember the general direction of the circulation - Rising northern pacific. You start in between Greenland and Europe (youngest water) - Oldest water is in the Pacific Ocean - Salty water> fresh water - Cold Water > Warm Water






8. Thawing permafrost weakens coastal lands. Risk of flooding in coastal wetlands. Pollution and toxins locked in the snow and ice will be released.






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






10. Amount of light absorbed by surface






11. The last portion of a glacier grounded to bedrock - after this line there are ice shelves.






12. ~10% of incident solar energy (albedo 90)






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






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






15. The last portion of a glacier grounded to bedrock - after this line there are ice shelves.






16. 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.






17. The Earth emits this.






18. Surface Mass Balance is of the order of _____ melting is ____ times more.






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






20. 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.






21. 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






22. Greenhouse gases are a ___ portion of the atmosphere






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






24. 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.






25. Where does the ozone protect us?






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






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






28. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






30. 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.






31. Same amount of H2O - Mass does not change - Density of ice < density of water - Volume of ice > volume of water






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






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






34. Descending Air dry - Convection cells are wet.






35. 240 w/m squared






36. Like weighing oneself on the scale.






37. Greenhouse gases are mixed in the ____






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






39. 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






40. Less frequent and weaker






41. 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






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






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






44. 85%






45. Same as heating an apartment v home - Thinner atmosphere than tropics; warms faster.






46. 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






47. Melting Point decreases






48. 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






49. Forms in a mosaic of favoured locations.






50. Total absorbed solar radiation