Test your basic knowledge |

Global Warming

Subjects : literacy, science
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. Cooler water and drought conditions.

2. Pollution: heat and sunlight cook the air and the chemical compounds which are in it. This combines with the nitrogen oxide and creates 'smog'. This makes breathing difficult for those with respiratory ailments.

3. O Unfrozen soil that stays within the permafrost.

4. Radiation absorbed by atmospheric greenhouse gases?

5. 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

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

7. 1. We live in troposphere. Greenhouse gases here warm up the Earth 2. Above stratosphere. The ozone in this layer protects us.

8. Troposphere - Stratosphere (Ozone Layer) - Mesosphere - Ionosphere

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

10. 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

11. Where does the ozone protect us?

12. Changes in the Earth's solar radiation levels can impact the climate. Shortterm warming cycles on Earth.

13. 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

14. Antarctica - stratosphere - Sep-Oct

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

16. 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.

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

18. 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.

19. Precipitation intensity will rise ___ for every 1 OC of warming.

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

21. 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.

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

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

24. 20% human produced CO2 emissions. Tropical forests hold around 50% of the carbon present in vegetation on Earth.

25. 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

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

27. The heat input is either driven by the 1- thermohaline circulation associated with sea ice formation. The direct influx of intermediate warmth water.

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

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

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

31. The buoyant force is equal to the weight of the displaced water.

32. Betts et al found that: if CO-2 __________ this has a physiological effect on plant transpiration increased simulated runoff by 6% b. How? i. More CO2 1. Plants pores open less 2. This reduces transpiration 3. More water in the land surface

33. The Day After Tomorrow - Circulation will slow by 10% to 50% in the next century

34. Tundra absorbs more energy than ice and snow but less than scrubs and forest - and with those plants migrating towards the north - they will further contribute ot absorb more energy.

35. Trade winds blow from East to West - Pool of warm water in the west - Meanwhile deep colder water rises up in the Eastern Pacific - The sea level is ~ 50-60 cm higher in Western Pacific (Indonesia) than in the Eastern Pacific (South America/Peru) -

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

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

38. 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

39. 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.

40. The depletion of stratospheric ozone layer in Antarctica in Springtime (august through October)

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

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

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

44. 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

45. Warming- positive feedback - Cooling- negative feedback.

46. Less frequent and weaker

47. More common

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

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