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Quarter 2 Unit 1 Vocabulary

Terms in this set (16)

core
The center of the earth
crust
The thin, outermost layer of the earth
deposition
The dropping or settling of eroded materials
earthquake
a vibration in Earth's crust, caused by the release of energy in a fault
epicenter
the point on Earth's surface directly above the focus of an earthquake
erosion
the removal and transportation of weathered materials
fault
a break in Earth's crust where rocks can slide past each other
focus
the point inside Earth where an earthquake begins
glacier
an immense sheet of moving ice
mantle
the thick layer of Earth beneath the crust
mid-ocean ridge
a chain of mountains that runs through the world's oceans
plate tectonics
the theory that Earth's crust is broken into plates that are always moving
rift
a deep valley at the highest part of the mid-ocean ridge
sea-floor spreading
the process of tectonic plates moving apart along the mid-ocean ridge
volcano
a mountain formed when molten rock is pushed to Earth's surface and builds up
weathering
the process by which rock is broken down into smaller pieces
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