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

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

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

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

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

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

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

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

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

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

11. Number of days that exceed a given temperature

12. Radiation absorbed by atmospheric greenhouse gases?

13. Ocean retains ____ CO2

14. Surface Mass Balance is of the order of _____ melting is ____ times more.

15. Where does the ozone protect us?

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

17. Warming- positive feedback - Cooling- negative feedback.

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

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

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

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

22. Nitrogen (N2 78%) and Oxygen (O2 21%) - Their linear 2 atom molecular structure

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

24. US is responsible for ___ of the total CO2

25. 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

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

27. 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.

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

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

30. 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

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

32. Total absorbed solar radiation

33. ~10% of incident solar energy (albedo 90)

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

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

36. The past climate...for this reason - both keep good records of climate change.

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

38. SMB- mass balance due to processes that affect the surface of the ice sheet. Precipitation- evapotranspiration-runoff-blowing snow etc.

39. O Unfrozen soil that stays within the permafrost.

40. 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

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

42. Longwave radiation - any radiation with a long wave will heat up quickly.

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

44. Ice flowing from the middle of Greenland to the edges and melting. 90 feet a day- speed that ice is moving.

45. 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.

46. Like weighing oneself on the scale.

47. Really measures volume.

48. 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.

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

50. Volcanic eruptions - Sunspots - Wobbly Earth