the movement of magma within the mantle where hot magma rises and cooler magma sinks

plate boundaries where plates slide past each other; example: San Andreas Fault

features that can occur at every type of plate boundary

crust that is dense, young, about 5 miles thick, and made of basalt

A German scientist who proposed the theory of continental drift

The process by which molten material adds new oceanic crust to the ocean floor

The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations

plastic-like layer of Earth on which the lithospheric plates float and move around

volcanic mountains (volcanoes); example: Andes Mountains

a rigid layer made up of the uppermost part of the mantle and the crust.

same fossils and rock types in various locations on Earth, the continents have a puzzle-like fit, marks from glaciers in areas where glaciers can no l...

others did not believe his theory because he couldn't explain how it happened