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. The Earth emits this.






2. Number of days that exceed a given temperature






3. CO2 ____ in winter in the NH and ____ decreases during the 'greening season'






4. 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






5. Antarctica - stratosphere - Sep-Oct






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






7. Radiation absorbed by atmospheric greenhouse gases?






8. 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






9. 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.






10. Cooler water and drought conditions.






11. 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






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






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






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






15. Measures input and output.






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






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






18. SALTY WATER = MORE DENSE - Maximum density at 4OC - This is why ice melting is a big deal; if the whole circle slows down - Ice bergs are fresh water higher sea level rise.






19. Set up in 1988 by WMO and UNEP.






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






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






22. Over the Northern Hemisphere than the tropics.






23. 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.






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






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






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






27. Atmosphere retains ____ CO2






28. 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.






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






30. Rainy on yearly average. In these regions - rising air predominates.






31. 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






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






33. If the mean annual air temperature is only slightly below 0 degrees C - permafrost will form only in spots that are sheltered.






34. Warming- positive feedback - Cooling- negative feedback.






35. Descending Air dry - Convection cells are wet.






36. 240 w/m squared






37. 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.






38. 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.






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






40. Industry 40% - Buildings 31% - Transportations 22% - Agriculture 4%






41. 10 : 1 - grounding ; surface






42. 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.






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






44. When inversion breaks up _______________. - Consequently - anything that breaks inversions or makes them form less often could produce major ground level warming.






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






46. The difference between the incoming radiation energy and the outgoing radiation energy - A measure of the net energy.






47. 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






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






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






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