How do crustial plates move? What is the evidence thats suggests crustial plates have moved?

Question

How do crustial plates move? What is the evidence thats suggests crustial plates have moved?

Answer 1

You can do no better than to go to the websites below.  They will tell you all about plate tectonics, how and why and where and when, plus much of the evidence for it.  In fact Plate movement is now proven as it has been measured using GPS  stations.

Answer 2

plates move because of the convection currents within earth's mantle (when hot air rises and falls). when currents move towards each other, it pulls two plates together, causing a mountain or volcano of some sort. when they move away from each other, they cause the plates to move apart, creating a ridge or rift.

also, ocean water acts as a lubricant which helps plate tectonics.

as for the evidence, the most obvious one seems to be that the continents can fit together like the pieces of a puzzle (take a look at the left coast of south america and the right coast of africa) this suggests that they may have once been one continent, and later broke apart.