what are tectonic plates..........explain it's types
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Answer:
A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. There are three types of plate boundaries, characterized by the way the plates move relative to each other.
Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. ...
Divergent boundaries – where two plates are moving apart. ...
Transform boundaries – where plates slide passed each other.
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The Earth's lithosphere is broken up into tectonic plates — massive, irregular slabs of solid rock that are assumed to average about 70 miles thick. The Earth consists of seven major tectonic plates (underneath the continents as well as the oceans) and many more, smaller ones. These plates float, or "ride," on the asthenosphere.
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