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For the most part our oceans are made up of...
Salinity is measured by...
parts per thousand
What percentage of Earth is covered by oceans?
Salinity ions are constantly being added to seawater through...
Salinity ions are constantly being removed from seawater through
Ocean water____ to density with depth in the mid lattitudes
Ocean water_________ in temperature with depth in the mid latitudes
Where would you expect to ind surface sea water with the highest salinity?
-at 30 degrees north latitude
Where would you expect to find surface sea water with the lowest salinity?
At mouth of the amazon river
Earthquakes would most likely be found...
at an active continental margin
The major force at the lithosphere thought to be driving plate motion is...
Which of the following can not be used to discern plate motion rates?
motions we feel during earthquake
Generally speaking the oldest crust material is found
on the continents
The oldest ocean floor is found...
along trenches at the subduction zones
Where would you expect to find ocean water with the highest ratio of chlorine ions to sodium dissolved?
nowhere as the ratio of dissolved ions does not change
Across the whole planet, the plate boundary with the aboslute most amount of volcanism is
Transform fault boundaries are most often found
seperating and offsetting sections of divergent boundaries
Surface waves are primarily driven by
The area of land where water meets continent is
Dunes and Berms are often found in
the backshore of the beach zone
The range between high tidal reach and low tidal reach is
the foreshore of the beach zone
The area behind the beach zone is
When the tops of waves overrun the base of the orbital motion, the waves....
Waves far from the coastal areas swells exhibit
orbital motion restricted to the near surface
Beaches made be made up of...
quartz sand, black volcanic glass, pieces of shells, and rocks
Wave breakers form at a beach....
orbital motion breaks down
what is a rip current?
an intermittent strong surface current