Question

what are tectonic plates​

Answer 1

Answer:

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here is your answer...

Explanation:

A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. ... Continental crust is composed of granitic rocks which are made up of relatively lightweight minerals such as quartz and feldspar.

Answer 2

Answer:

Plate tectonics is a scientific theory describing the large-scale motion of the plates making up the Earth's lithosphere since tectonic processes began on Earth between 3.3 and 3.5 billion years ago. The model builds on the concept of continental drift, an idea developed during the first decades of the 20th century.

Explanation:

Exact answer in Wikipedia.

Its all about Pangaea/Pangea and the Continental Drift Theory.