Chapter 9 Vocabulary
Terms in this set (22)
The natural remanent magnetism in rock bodies
A destructive plate margin where oceanic crust is being pushed down into the mantle beneath a second plate.
Transform Fault Boundary
A boundary in which two plates slide past each other without creating or destroying lithosphere.
A hypothesis that originally proposed that the continents had once been joined to form a single super-continent.
A continuous elevated zone on the floor of all the major ocean basins and varying in width from 1000 to 4000 kilometers.
One of the numerous rigid sections of the lithosphere that moves as a unit over the material of the asthenosphere.
The motion of matter resulting from convection
The primary downward arm of convective flow in the mantle.
Motion that causes oceanic lithosphere to slide down the sides of the oceanic ridge.
Hot plumes of rock that are the upward flowing arms in mantle convection.
Volcanic Island Arc
A chain of volcanic islands generally located a few hundred kilometers from a trench of one oceanic slab beneath another is occurring.
A surface feature in the seafloor produced by the descending plate during subduction.
A region where the rigid plates are moving apart, typified by the oceanic ridges.
Deep faulted structure found along the axes of divergent plate boundaries.
The proposed supercontinent that 200 million years ago began to break apart and form the present landmasses.
A magnetic field that is the same as that which exists at present.
A concentration of heat in the mantle capable of producing magma, which rises to the Earth's surface.
A magnetic field opposite to that which exists at present.
The process by which plate tectonics produces new oceanic lithosphere at ocean ridges.
The theory that proposes that Earth's outer shell consists of individual plates that interact in various ways and thereby produce earthquakes, volcanoes, mountains, and the crust itself.
A boundary in which two plates are moving together.
Continental volcanic arc
Mountains formed in part by volcanic activity caused by the subduction of oceanic lithosphere beneath a continent.
YOU MIGHT ALSO LIKE...
Earth science chapter 9 vocab.
Earth Science: Chapter 9 Vocab
Chapter 9: Plate Tectonics Vocabulary
Earth Space Science Chapter 9 Vocabulary
OTHER SETS BY THIS CREATOR
Chapter 16 The Dynamic Ocean: 16.1 and 16.2
Ch. 14-15 Vocab
Ch. 10 Volcanoes
Ch. 10 and Ch. 11