Yueng Lenn Practice questions

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1. In the Strait of Gibraltar there is also a deep flow of water out of the Mediterranean into the Atlantic. If the surface inflow is 4 Sverdrups and salinity 30, and the bottom outflow is 3 Sverdrups, what must be its salinity to maintain a salt balanc

  • 35
  • 45
  • 40
  • 30
1 of 15

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2. Why is there an inflow of surface water through the Strait of Gibraltar to the Mediterranean Sea?

  • It replaces water lost from the Med by evaporation
  • It is driven by the prevailing westerly winds
  • It replaces water lost from the Med through the Suez canal
  • It replaces water lost by the Med through a small crack in the sea floor

3. The energy in ocean waves depends on the wave height. Which of the following statements is true?

  • The energy depends on the square root of the wave height
  • The energy depends on the logarithm of the wave height
  • The energy depends on the square of the wave height
  • The energy is proportional to the wave height

4. Which way would you expect air to circulate in a region of low pressure in the northern hemisphere?

  • Upwards
  • Towards the centre
  • Anti-clockwise
  • Clockwise

5. In deep water, waves with long period go faster. What name do we give to this effect?

  • convection
  • refraction
  • dispersion
  • diffraction

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