INSIDE THE EARTH

Vocabulary

3 Types:1. Oceanic – Oceanic2. Continental – Continental3. Continental – Oceanic

DefinitionThe boundary formed by the collision of 2 lithospheric plates.

DefinitionThe boundary between 2 tectonic plates that are moving away from each other.

EffectSea Floor Spreading at a Mid-Ocean Ridge

DefinitionThe boundary between 2 tectonic plates that are sliding past each other horizontally.

Effect Earthquakes!!!!!

Types1. Reverse Fault2. Strike – Slip Fault3. Normal Fault

DefinitionA break in a body of rock along which one body of rock slides relative to another.

Definition Pieces of the lithosphere that move around on top of the asthenosphere.

DefinitionThe solid outer layer of the earth that consists of the crust and the rigid upper part of the mantle.

Divided into tectonic plates.

DefinitionThe body of molten rock that feeds a volcano

DefinitionThe soft, plastic layer of the mantle on which the tectonic plates move because of heat that causes convection currents.

It causes the tectonic plates to move.

DefinitionThe shaking of the ground

Measured by seismic waves

Forms at transform boundaries

DefinitionA vent or fissure in the earth’s surface through which magma and volcanic gases are expelled.

Forms at Convergent boundaries

DefinitionThe theory that explains how large pieces of the earth’s outermost layer called tectonic plates move on the asthenosphere and change shape.

DefinitionThe tectonically active volcanoes that formed to surround the Pacific ocean.

Indonesian Islands, Phillipino Islands, Japan

DefinitionThe hypothesis that states that the continents once formed a single landmass called Pangaea, broke apart, and drifted to their present locations.

Who came up with it?Alfred Wegener

DefinitionThe process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies.

Occurs at divergent boundaries

DefinitionThe lithosphere sinks under another plate. Old oceanic crust gets pushed down into the asthenosphere where it is re-melted and recycled.

Causes volcanoes to form.

Occurs at convergent boundaries.