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. 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.






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






3. Melting Point decreases






4. Like weighing oneself on the scale.






5. Amount of light absorbed by surface






6. 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






7. Grounding line is the last portion of a glacier grounded to bedrock - after this line there are ice shelves - Glaciers contribute to sea level rise after passing the grounding line - Maximum thinning at grounding line.






8. In average: +1% in respect to 100 years ago.






9. In _______ - the inversions are less frequent and weaker in the Arctic.






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






11. Temperature needed to melt at depth is much lower than that needed to melt at the surface.






12. Atmosphere retains ____ CO2






13. Massive cooldown has allowed colder conditions to persist leading to cfcs stabilizing leading to ozone depletion. Later - more warming will lead to more moisture in the air which will lead to more snowfall!






14. Peru and Ecuador to the equatorial central pacific - Causes irregular warming in sea surface






15. 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






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






17. Low clouds are a ____ feedback; they will reflect more sunlight. Clouds reflect shortwave radiation but also absorb longwave radiation






18. Most of the deserts are around 30 N and 30 S - where sinking air predominates






19. 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.






20. 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.






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






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






23. Antarctica - stratosphere - Sep-Oct






24. 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






25. 10 : 1 - grounding ; surface






26. Number of days that exceed a given temperature






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






28. 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






29. Descending Air dry - Convection cells are wet.






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






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






32. When meltwater seeps through a flowing glacier - it can lubricate the base and hasten the glacier's seaward flow.






33. 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






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






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






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






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






38. 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






39. Amount of light absorbed by atmosphere






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






41. 1. Altimetry survey 2. Time-variable gravity 3. Ice motion + Regional Climate Modeling






42. Warming- positive feedback - Cooling- negative feedback.






43. 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






44. Greenhouse gases are a ___ portion of the atmosphere






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






46. More common






47. CO2 GHG forcing - H2O - dominant/major GHG






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






49. 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.






50. The large-scale ocean circulation that moves water between the deep and surface ocean which effects salinity and temperature change - Supplies heat to the polar-regions.