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Apologia Marine Biology module 1

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    The Ocean
  •   Study   Slideshow
  • Name the 4 major Ocean basins of the world.
    A)Pacific, B)Atlantic, E)Indian, D)Artic
  •  20
  • Describe the differences between Continental Crust and Oceanic Crust.
    1. Continental crust is thicker than Oceanic crust. 2. Oceanic crust is more dense than continental. 3. Oceanic is basalt, Continental is granite
  •  15
  • What are the 3 ways plates can interact with each other.
    1. moving towards each other-colliding. 2. moving away from each other- sea floor spreading. 3. sliding beside each other - shearing
  •  15
  • What kind of geological formations will you see where continental crust and oceanic crust collide?
    Subduction - volcanoes, mountains, a trench
  •  15
  • What causes the parallel lines of magnetic reversals on the ocean floor?
    sea floor spreading
  •  15
  • Why is the ocean blue?
    1. reflecting the blue sky, but more... the water molecules absorb everything but the bluish colors
  •  15
  • What makes water different than other substances? What unusual characteristics does it have because of this?
    1. Hydrogen bonding- Less dense as a solid, high specific heat, high surface tension which causes higher boiling and lower freezing
  •  20
  • What is specific heat? Name one substance with a high specific heat and one with a low specific heat.
    the energy required to raise the temperature of one gram of a given substance by one degree Celsius.
  •  20
  • What causes surface water to become more dense?
    1. evaporation - increased salinity 2. colder air temperatures - cools off the water
  •  20
  • Where do you find the most marine life and why?
    The continental shelf, because sunlight reaches to the bottom there
  •  20
  • Why are deep sea organisms hard to study?
    The pressure is very high in that environment.
  •  15
  • What does the earth have very consistent winds?
    They are caused by consistent temperature differences and the rotation of the earth
  •  20
  • What is the definition of a wave?
    A disturbance that propagates in a medium
  •  15
  • What is a spring tide and what causes it?
    A tide with a higher high tide and lower low tide. Caused by the earth sun and moon being in a line
  •  20
  • Where is the moon in relation to the earth and the sun during a neap tide?
    Not aligned, perpendicular to the line between the sun and earth. quarter moon
  •  15
  • What is overturn and what conditions can cause it?
    When denser water from the surface sinks and displaces the deeper ocean water. It is caused by more dense water at the surface (higher salinity, coolder)
  •  15