STAAR Plate Tectonics

Formed when magma cools beneath the Earth’s surface; requires heat

Occurs when rocks are broken apart by physical processes

Alfred Wegener believed landmasses of Earth once fit together to form a single landmass called “Pangaea”.

Occur when plates are moving apart

Common site of geologic activity caused by moving plates

The movement of sediment; moves pieces of Earth from one place and builds land in another

Where one plate moves under another

Made of crust and upper mantle; broken into tectonic plates

Occur where plates come together; volcanic or folded mountains

What is the layer just inside of the lithosphere; partially molten that allows convection currents?