The name given to the single large land mass - means "all land"
The hypothesis that all of the continents were once a connected single land mass, that broke apart and drifted to their present locations.
A theory that seafloor is formed when magma is forced upward to the surface at mid ocean ridges.
The theory that Earth's crust and upper mantle are broken into plates that float and move on the asthenosphere.
The boundary between tectonic plates that are colliding.
The boundary between tectonic plates that are moving away from each other.
The boundary between two tectonic plates that are sliding past each other.