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  1. Fresh water
    bodies of water such as lakes, rivers, streams, resorvoirs
  2. How much water Canada has
    10% of worlds fresh water
  3. estesry
    sea water and fresh water mic
  4. more ground water then
    in all the lakes and streams
  5. ground water is also
    most pulluted than anyother source of fresh water
  6. Aquifer
    underground resirvires inside the rocks
  7. clouds formation
    • warm air rises --> expands --> cools
    • cold air cannot hold much water vapour
    • excess water vapour condensses onto dust on air and foarms a tiny proplet around each dust partical
    • it takes billions of droplets come together to form a visible cloud
    • droplets group togethr (congregate) because of different factors in atmosphere
  8. thermal energy
    the motion of particals such as atoms, ions, molecules in substance
  9. heat is thermal energy transfered
    from one object to another
  10. 3 mechanisams of heat transfer
    • conduction
    • convection
    • Radiation
  11. Radiation
    • a mechanisam of heat transfer where atoms/molecules emit electromagnetic waves
    • waves carry energy through space and deposit it when they entiract with some form of matter
  12. only mechanisam to energy transfer to earth is
    • radiation
    • energy from sun is carried by electomagnetic waves until come in contact with earth
  13. why is radiation only mechanusam of energy transfer to earth
    other energy transfer mechanisams require matter (solid/liquid substance) to transport the energy
  14. earth rediation budget
    enegy from sun travles (electromagnetic waves) --> comes in contact with earth --> atmosphere reflects, absorbes, scatters radiationreducing amount ofenergy reaching earth surface
  15. earths rediation budget is a modal that
    • shows the amount of energy the earth gets from solar radiation
    • and
    • how amount of energy the earth sends back into space
  16. earth maintains balnce and tempeture balance by
    radiating as much energy as it is absorbing
  17. what drives weather
    energy transformation that occur between absoption and re emitssion
  18. how does solar radiation budget influnced by cloud cover?
    • more clouds less absorption more reflection
    • less clouds more absourption by arth surface
  19. how does solar radiation budget influnced by solar radiation
    more energy emitted by sun more energy reflected e and absorbed by earth
  20. how does solar radiation budget influnced by absorption
    more energy absorbed more energy reflected back into space
  21. why lighter colored objects less hot then darker colored objects
    • light collered objects have high albedo = high reflection = low temeptire
    • dark colored objects have less albedo = high absorption = high tempeture
  22. Latitude
    the measure of distance north / south from the equator
  23. higher angle of latitude means beam of light is
    spread over a larger area = less solar energy means less absorption and reflection
  24. Opposite of el nino
    la nina
  25. upwelling
    When wind blowes on water, it causes some water to be blown away creating a holl causing cool water from bellow come up. bringing up nutrients that have settled at bottom ocean.
  26. why are upwelling good ?
    • when upwelling occur off the west coasts of continents within/near tropical zone due to trade winds.
    • when cool water from below comes up to replace water was blowen away it brings up nutrients which have settled to bottom of ocean.
    • algae thrive (grow) in cool, nutrient-rich water fish feed on the algae
  27. El nino
    Warming of east pacific waters
  28. how often el nino occures in south america? why?
    • every few years caused by reversal of the direction of
    • trade winds between south america,austrlia indonesia
  29. southern oscrllation called "ENSO" which standes for:
    • E- El
    • N- nino
    • S- southern
    • O- oscillation
  30. southern oscrllation
  31. Weather
    current state of the atmosphere
  32. Earth axis tilt
  33. what effects the seasons
    tilt of the earths axis causes effect of different seasons
  34. Rain
    • must be atlist 0.5mm to fall
    • creat fine mist
  35. Coatesce
    • raindrops and ice crystals coatesce to get larger
    • thye collide and blend together
  36. rain when
    air between clouds and ground above 0
  37. Snow
    if air between clouds and ground bellow 0 (freezing point)
  38. Snow
    Extremely cold air
    makes crystals remain small like fine powder
  39. Snow
    warmer air
    snowflakes stick together and become larger
  40. Sleet
    • icie pallets
    • a layer of air below the cloud is warm enough to melt the snow and turn it into rain
    • closer to the ground the air is below freezing point so raindrops freezr again
  41. sleet does not
    freeze as crystals instead form ice pellets
  42. Freezing Rain
    when rain hits cold objects it freezes instantly creating a solid coating of ice
  43. Hail
    • hailstones start as frozen raindrops
    • instead of falling directily to earth
    • womd in cumulonibus clouds carries hailstones back up into the clouds
Card Set:
2012-03-16 02:13:24

weather unit
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