The boundary between land and a body of water.
A large mass of limestone rocks surrounding a volcanic island in tropical waters near a continental shelf.
A gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent. Part of the continental margin
A part of the continental margin at the edge of a continental shelf where the ocean floor plunges steeply from 4-5 kilometers.
A part of the continental margin that separates a continental slope from the ocean floor.
A deep canyon that cuts into the Continetal Shelf.
A large, very flat area of the ocean floor.
An underwater mountain rising above the ocean floor.
A flat topped seamount. It has become flat because of erosion.
A long, narrow, and deep part of the ocean floor.
An undersea mountain range where new ocean floor is produced. It is a divergent plate boundary.
A valley in the ocean floor.
A place where two plates collide. This action destroys crust.
A place where two plates are spreading apart. This creates more crust as lava comes up and cools down-thus making more crust.
The place where two plates move side bye side.
The Theory of Continental Drift
The theory that the continents were once joined and then drifted apart. This was discovered by Alfred Wagner.
The theory that explains how large pieces of the crust or lithosphere, called plates, move and change shape.
An imaginary line around the Earth forming the great circle that is of an equal distance from the north and south poles. 0 degrees Latitude.
The act of water moving and destroying rocks and the crust. This action destroys the crust.
0 degrees longitude.
International Date Line. It is at the 180th Meridian. The sides have a difference in time of one day.
The amount of salt in a kilogram of water. Measured in PPT or parts per thousand.