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. 240 w/m squared






2. 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.






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






4. 2ppm of the atmosphere - less than 20% of greenhouse gases - 1/3 greenhouse gases effect of CO2






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






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






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






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






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






10. More common






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






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






13. Greenhouse gases are a ___ portion of the atmosphere






14. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.






15. 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.






16. High clouds are a ____ feedback; larger greenhouse warming - Clouds reflect shortwave radiation but also absorb longwave radiation






17. Less frequent and weaker






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






19. he increase of ozone concentration in the atmosphere helps ____ our planet






20. Land Based Ecosystems retain ____ CO2.






21. 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






22. A mass of land ice - continental or sub-continental in extent - and thick enough to cover most of the underlying bedrock topography - If you have a warm ocean - it will melt the ice sheet. Its shape is mainly determined by the dynamics of its outward






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. Melting Point decreases






25. 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






26. 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.






27. 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






28. Mass balance due to processes that affect the surface of the ice sheet. Precipitation-evapotranspiration-runoff-blowing snow etc...






29. Holds unique and key information - Are highly interconnected - Respond and drive climate change - Are the largest freshwater reservoirs of the planet - Ice cores tell us that in climate records - nothing is regular and ice sheet plays major role.






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






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






33. The warmer the temperature - the deeper the active layer - thaws and refreezes every year - Permafrost below freezing for two or more years.






34. 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






35. High cloud has a _____ effect and cool cloud has a ____ effect






36. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.






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






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






39. LW - SW - 55% absorbed by surface






40. Measures input and output.






41. 85%






42. ~10% of incident solar energy (albedo 90)






43. US is responsible for ___ of the total CO2






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






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






46. An area of unfrozen ground that is open to the ground surface but otherwise enclosed in permafrost.






47. Like weighing oneself on the scale.






48. Closed talik can develop when lakes fill in with sediment and become deposits of dead plant material (bog).






49. 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






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