Physical Oceanography

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Physical Oceanography

• Density

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Density

• Measured in ________________________
• Is the major factor in ___________________________
  _ and distribution of plankton
• Controlled by _______________________
• Measured with a __________________

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Why Does Ice Float?

• Water molecules push apart during freezing,
  ___________________ the volume.
• Since the mass is ________________, but the
  volume is larger the ice has a lower density than
  the surrounding water and it floats.
• Ex) water 1.00 g/1.00 mL 1.00 g/mL density
• ice 1.00 g/1.10 mL 0.90 g/mL density

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• Liquid Water Frozen Water

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• If sea water has a salinity of 35 , then it will
  freeze at _______________.
• If ice freezes rapidly, salt pockets are trapped
  in it this makes it very brittle and is called
  ______________________.
• Salt pockets migrate downward and out, making ice
  _______________ as it gets older this also
  makes the ice much _____________________.

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Generalities about Density

1. Normal salt water has a density between
   __________________________
2. Density ________________ with depth
3. Density _________________ as temperature
   _____________________
4. Density ________________ as salinity
   _______________

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• Water is normally ______________ (in layers)
  based on density
• Q Is it possible to have a layer of warm ocean
  water below a layer of cold ocean water?

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• A