Key Earth Science vocabulary related to the structure of the Earth.
The crust is the thin outermost layer where we live, with two types: continental crust and oceanic crust.
Beneath the crust is the mantle, a thick layer of hot, solid rock that slowly flows due to heat from the Earth’s core, helping drive plate movement.
The lithosphere is made up of the crust and the rigid upper part of the mantle and is broken into large pieces called tectonic plates.
Below the lithosphere lies the asthenosphere, a solid but flexible layer that flows slowly, allowing the lithosphere to move on top of it.
Tectonic plates move very slowly but their movement causes earthquakes, volcanoes, and the shaping of continents.
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