1: Formation of Earth and Plate Tectonics Review

The point on the surface of the Earth directly above the focus of an earthquake

• The Moho

• Core

• Epicenter

• Magnitude

The record of ancient magnetism preserved in rock

• Pangaea

• Paleomagnetism

• Planetesimal

• Seismogram

A cloud of gas or dust in space

• Stellar Nucleosynthesis

• Protoplanet

• Nebulae

• Subduction

Two plates move away from the axis of a mid-ocean ridge

• Divergent Boundary

• Convergent Boundary

• Transform Boundary

• Subduction

The idea that continents have moved and are still moving across Earth

• Pangaea

• Transform Boundary

• Continental Drift

• Nebular Theory

The force that downgoing plates apply to oceanic lithosphere at a convergent margin

• Sea-floor spreading

• Subduction

• Slab pull force

• Ridge-push force

Two plates slide past each other on a vertical fault surface

• Transform Boundary

• Convergent Boundary

• Divergent Boundary

• Subduction

The process by which one oceanic plate bends and sinks down into the asthenosphere beneath another plate

• Sea-Floor Spreading

• Subduction

• Continental Drift

• Protoplanet

The layer of the mantle that is relatively soft and can flow when acted on by force

• Lithosphere

• The Moho

• Epicenter

• Asthenosphere

The concept that planets grow out of rings of gas, dust, and ice surrounding a newborn star

• Planestesimal

• Protoplanet

• Nebular Theory

• Paleomagnetism