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

2. Refers to a body of freshwater - usually shallow - formed in a depression by melt water from thawing permafrost.

3. Atmosphere retains ____ CO2

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

5. 342 W/m squared - DWEC - These things reflect sunlight (30%): water vapor - clouds - dust particles - earth's surface

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

7. 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

8. 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.

9. Forms from frozen ocean water - Floats on the ocean surface - Grows over the winter - melts in the summer

10. Really measures volume.

11. Sea ice - Glaciers and Ice sheets - Alaska- ice glaciers - Greenland- ice sheets

12. 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.

13. 78% nitrogen - 28% oxygen - Greenhouse gases: Have a more complex molecular structure and can absorb and re:radiate heat in all directions.

14. Total absorbed solar radiation

15. LW - SW - 55% absorbed by surface

16. Top layer of soil that thaws during the summer and freezes again during autumn. - Between 1 and 3 m thick.

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

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

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

20. 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.

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

22. ~10% of incident solar energy (albedo 90)

23. 240 w/m squared

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

25. Over the Northern Hemisphere than the tropics.

26. The amount of light reflected by an object.

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

28. 10 : 1 - grounding ; surface

29. 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

30. Where does the ozone protect us?

31. 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

32. Laser radar - H V - Long time series - high accuracy - Density

33. 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

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

35. 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

36. All processes that add snow or ice to a glacier or to flowing ice or snow cover.

37. Number of days that land among the hottest of all days in that month's long-term record.

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

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

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

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

42. 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

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

44. 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.

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

46. 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

47. Volcanic eruptions - Sunspots - Wobbly Earth

48. 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

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

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