Theory of Plate Tectonics

Theory of PlateTectonics

The theory that the lithosphere is broken into separate pieces, that the plates are like puzzle pieces shifting slow motion because of the forces within the mantle.

Mantle Convection

Solid rock under great pressure flowing in slow-moving currents. The mantle gets heated from below by Earth’s core and by the decay of radioactive material within the mantle.

Convection

A cyclical movement of fluid driven by temperature differences.

Divergent Boundary

When plates diverge, or move apart.

Convergent Boundary

When plates converge, or move together.

Transform Boundary

When plates slip past each other.

Seismic Waves

Waves that travel through Earth and create damage, released by earthquakes.

Tsunami

When a earthquake causes a major movement of the ocean, it creates a ocean wave called a tsunami.

Subduction

When one or both of two converging plates are oceanic.