Boundaries Vocabulary

Front

A plate boundary where two plates move toward each other.

Back

Convergent Boundary

Front

A plate boundary where two plates move away from each other.

Back

Divergent Boundary

Front

A plate boundary where two plates move past each other in opposite directions.

Back

Transform Boundary

Front

any of the world's main continuous expanses of land

Back

Continent

Front

the relatively thin part of the earth's crust which underlies the ocean basins

Back

Oceanic Crust

Front

The layer of igneous, metamorphic, and sedimentary rocks that forms the geological continents.

Back

Continental Crust

Front

the area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean.

Back

Continental Shelf

Front

Belt of volcanoes formed above a subducting oceanic tectonic plate, with the belt arranged in an arc shape as seen from above.

Back

Volcanic Island Arc

Front

A linear feature on the ocean floor—often hundreds, even thousands of kilometers long—resulting from the action of offset mid-ocean ridge.

Back

Fracture Zone