Well, Tupac the term "tectonics" comes from the greek word "tektonikos" meaning "construction." There for tectonics is the study of the formation of features in the earth's crust.
Plate Tectonics is meanly a theory that not only describes continental movement,but also proposes a possible explanation of why andow continents move.
Tupac you said "Tell me how many Tectonic Plates there are?"
Now Plate Tectonics is a theory,but I think you are asking for how many layers there are in the earth's crust.
Here are the layers=
The earth consists of two types of crust which is=
Oceanic and Continental.
Lithosphere=Those two different crusts make up this layer.
Asthenosphere=The layer beneath lithosphere.
Now the earth has 4 major layers,but think you where reffering to the crust.
The answer= 2
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