The main features of the theory of plate tectonics are: <br> <br>

The Earth's surface is covered by a series of crustal plates.

<br> <br>The ocean floors are continually, moving, spreading from the center, sinking at the edges, and being regenerated. <br> <br>

Convection currents beneath the plates move the crustal plates in different directions. <br> <br>

The source of heat driving the convection currents is radioactivity deep in the Earths mantle.

Record ID: 194