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Tectonic Plates
The Earth consists of four
concentric layers: inner
core, outer core, mantle
and crust. The crust is
made up of tectonic
plates, which are in
constant motion.
Earthquakes and
volcanoes are most likely
to occur at plate
boundaries.…read more

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Tectonic Plates
The Earth's crust is broken up into pieces called
plates.
Heat rising and falling inside the mantle creates
convection currents generated by radioactive decay
in the core.
The convection currents move the plates. Where
convection currents diverge near the Earth's crust,
plates move apart. Where convection currents
converge, plates move towards each other.
The movement of the plates, and the activity inside
the Earth, is called plate tectonics.…read more

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Plate tectonics cause earthquakes and volcanoes. The
point where two plates meet is called a plate boundary.
Earthquakes and volcanoes are most
likely to occur either on or near plate
boundaries.…read more

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Converging plates…read more

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Diverging plates…read more

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