Evidence
Continental Drift
The continents were first together but now are apart .
The continents are moving.Fossil Evidence
Nicholas Steno's anatomical drawing of an extant shark (left) and a fossil shark tooth (right). Steno made the leap and declared that the fossil teeth indeed came from the mouths of once-living sharks.
Rock Evidence
llustration showing similar rock assemblages across
mountain belts are all the same rock type/formation
Plate Tectonics
The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
Hess's theory that new seafloor is formed when magma is forced upward toward the surface at a mid-ocean ridge
Seafloor Spreading
side way flow of hot materials near ocean ridges.
Earthquakes and Volcano Mapping
What two natural disasters does Chile have.
Hot Spots
Places on the Earth's surface that are directly above a column of rising magma.