break in the Earth's crust along which rocks move
deepest layer of Earth, at the center of the Earth
a huge mass of ice that moves slowly and erodes the land
point on Earth's surface right above the focus of an earthquake
tiny bits of rock, mixed with decayed organisms in which plants can grow
underground point where an earthquake first starts
instrument that records earthquake waves
the breaking aprat of rocks by freezing water pushing against the sides in rocks
they layer of Earth that includes land and ocean floor, what we stand on
continental-sized slabs that make up the crust and upper mantle
the breaking down of rocks
the wearing away and moving of materials by water, wind and ice
rise higher than the land around it but not as high as a mountain
the shaking of the Earth's crust
thickest layer of the Earth, made of solid and melted rock
rises above the land around it, but is flat on top
highest form of land on Earth
a period of time when part of the Earth was covered by glaciers
low land between a group of mountains or hills
a mountain that forms when melted rock flows through a crack onton the Earth's surface
melted rock that reaches Earth's surface
a large basin formed at the top of a volcano
melted earth inside Earth
an underground pool that holds hot magma
a rocky opening through which magma flows
a scale by which scientists can measure an earthquake
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