Drew Holt

Earth's solid, rocky surface

the idea that rock forms straight horizontal layers

the idea that the supercontinent split into pieces

the idea that new crust is forming at the ridges in the ocean

hot molten rock below the Earth's surface

the idea that the Earth's surface is broken into plates

layer beneath Earth's crust

the sliding of an denser ocean plate under an another plate

a huge crack in the Earth's crust

the point where an earthquake starts

a vibration that spreads from the focus of an earthquake

the area on the surface right above the focus

shaking of the Earth's crust after the earthquake

a device that measures the seismic waves of an earthquake

the amount of energy released by an earthquake

the central opening in a volcanic area where lava may escape

magma that reaches the Earth's surface and flows out a vent

a cuplike hollow that forms at the top of a volcano

a very hot spot on the Earth's mantle

a steep-sided cone that forms by explosive eruptions of hot rock

wide, gently sloped cone that forms by flows of lava

 volcano formed by eruptions of rocks and streams of lava

heat for below the Earth's surface