Study Guide Questions Flashcards
What are the two main elements in the ocean?
sodium and chloride
How is the continental margin divided into the shelf slope and rise?
By the depth of the water
What are benthos?
Organisms that live on the bottom of a sea or ocean.
What does the deep ocean basin consist of?
The abyssal plain, mid ocean ridges, rift valleys, ocean trenches, and seamounts.
What is salinity?
A measure of the amount of salt in a given amount of liquids.
What are and how do the sonar waves work?
They are waves that scientists use to determine the depth of the ocean. The longer it takes a wave to hit the bottom and come up again, the deeper the ocean depth.
What is nekton?
All organisms that swim actively in open waters, independent of the current.
What do engineers drill for in the ocean?
Oil
What is non-point source pollution?
Pollution that comes from many sources rather than from a single specific site.
What are renewable resources?
Resources that can be replaced in time, after being used.
What is desalination?
The process of removing salt from water.
What does the U.S Marine Protection, Research, and Sanctuaries act do?
It is an act that prohibits dumping of material that would cause damage to human health and welfare, marine environment and ecosystems, and businesses that depend on the ocean.
What is the neritic zone?
It is part of the pelagic environment, it has the largest concentration of marine life, and it covers the entire continental shelf.
What is plankton?
Microscopic organisms that float and drift freely in fresh water and marine environments.
What is nekton?
All organisms that swim actively in open waters, independent of currents.
What is the pelagic environment?
In the ocean; beyond the sublittoral and above the abyssal zones; near the surface or at middle depths.
What are benthos?
Organisms that live on the bottom of a lake, pond, or ocean.
What is the benthic environment?
The region near or at the bottom if a lake sea or ocean.
What is an ocean trench?
A steep long depression on the sea floor that runs parallel to a chain if volcanic islands or continental margin.
What are seamounts?
A submerged mountain on the ocean floor that is at least 1000m high and has volcanic origin.
What is a rift valley?
A narrow valley formed when tectonic plates separate
What is a mid ocean ridge?
A long undersea chain of mountains that firms along the floor of major oceans.
What features at the bottom if the ocean form near tectonic plates?
Abyssal plains mid ocean ridges rift valleys seamounts and ocean trenches.
What are non renewable resources?
Things that are being used up too fast than can be naturally replaced.
What are renewable resources?
Things that can be replaced in time after being used.
What is desalination?
The process of removing salt from ocean water.
What is overfishing?
When we are using up too much fish than can be replaced.
What is seaweed?
Species of algae,living resource, harvested from the ocean.
What are nonliving resources?
Oil natural gas water minerals tidal energy and wave energy.
