Plate tectonics
a theory called Earth Crust Displacement (ECD)
Yes, the crust is the top layer. It continually changes.
It's called 'plate tectonics' - and explains that the Earth's crust is composed of large pieces (or plates) that 'glide' over the molten mantle beneath.
Compression is a force that changes Earth's crust by squeezing rock until it folds or breaks.
Plate tectonics.
Plate tectonics.
Plate Tectonics
Wave Length.
Plate tectonics.
Plate Tectonics!
Plate tectonics.