It is because the tectonic are not still.
They are constantly in motion even though it is almost negligible .
When such two vibrating plated come in contact with each other, they produce seismic waves which sometimes result as earthquake.
Tectonic plates
No(see the explanation of the question "Why do the tectonic plates move?"
there are 7 huge plates but dozens of smaller plates
They are called tectonic or lithospheric plates.
pacific and atlantic plates
pacific plate
The lithosphere.
The plates that make up the Earth's crust are called tectonic plates. These plates float on the semi-fluid asthenosphere underneath and interact with each other at plate boundaries, causing various geological phenomena such as earthquakes and volcanic activity.
Tectonic plates and fault lines created by the movement of tectonic plates.
Tectonic plates are also "Continental Crust" and "Oceanic Crust". Also lithospheric plates.
Yes, tectonic plates are also known as crustal plates.
harry hess named the tectonic plates but I'm not sure why =/