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. 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.






2. 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.






3. If the Earth is warmer - are we going to have the Hadley cell stronger or weaker? Hotter = heat rises which increases the circulation.






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






5. 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.






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






7. Radiation that comes from the Sun - Visible light - 'near infrared' - ultraviolet radiation.






8. Greenhouse gases are a ___ portion of the atmosphere






9. Set up in 1988 by WMO and UNEP.






10. Refers to the irregular warming in the Sea Surface Temperatures (SST) from the coasts of Peru and Ecuador to the equatorial central Pacific - the Southern Oscillation






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






12. LW - SW - 55% absorbed by surface






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






14. Pockets of ice in the topmost permafrost caused by thawing which create an underground lake.






15. 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






16. Industrial product - 300 ppb (parts per billion)






17. A climate forcing agent formed through the incomplete combustion of fossil fuels - biofuel - and biomass; emitted both anthropogenic:ally and naturally.






18. 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.






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






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






22. 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.






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






24. Ocean retains ____ CO2






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






26. Reduction of snow and ice cover - Changes in atmospheric circulation.






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






28. 85%






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






30. CO2 - CH4 - O3 - H2O - N2O - CFCs






31. 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






32. Climate models suggest once the sea ice cover is thinned sufficiently - a strong kick from natural variability could initiate a rapid slide towards ice-free conditions in the summer.






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






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






35. Frozen +2 years - Few centimeters to 1500 m






36. Number of days that exceed a given temperature






37. Descending Air dry - Convection cells are wet.






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






39. Sea ice and continental ice. This is caused by Atmospheric warming triggers.






40. Water vapor - 36-70% - carbon dioxide - 9-26% - methane - 4-9% - ozone - 3-7%






41. A process whereby slabs of ice at the glacier margin mechanically fracture and detach from the main ice mass -






42. 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.






43. 1. They are the largest contributor to sea level rise 2. Can affect the thermohaline circulation (mainly in Greenland) 3. Are directly connected to climate change






44. Some parts of the planet are dry because of their location: most of the deserts are around 30 N and 30 S - where sinking air predominates






45. Slow steady decline of about 4% per decade in the total volume of Earth's stratospheric ozone.






46. 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






47. Arctic warms faster than other parts of the globe in response to a given increase in greenhouse gasses - More direct route to warming - In the Arctic a greater fraction of any increase in radiation absorbed by the surface goes directly into warming t






48. 1. Land usage changes 2. Seasonal timing 3. Rising CO2 levels may be a factor






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






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