made of three layers

a vibration or shaking of Earth's crust

a mountain that forms when red-hot melted rock flows through a crack onto the earth's surface.

Earth's crust and upper mantle are broken into continent sized slabs

the thicker layer of the planet, mostly made of solid rock

a break in the crust along which rock moves

melted rock inside Earth.

Plates that move towards each other form this

the layer that we walk on

the point where the movement still took place

melted rock that reaches Earth's surface.

plates that move away from each other form this.

a dense ball made mostly of metal, iron and nickel

the point of the surface that is right above the focus

a rocky opening that magma flows through

plates that slide past each other form this

the core is divided into these two layers

an instrument that records earthquake waves.

a volcano forms in a place when the magma gets to the surface, it cools and hardens to form new ocean floor

uses numbers 1 through 9 to measure the energy an earthquake releases.