Which describes the motion of the plates? The hanging wall and footwall both move vertically. Shearing is causing the plates to slide past each other. The hanging wall moves down in relation to the footwall. Compression is causing the plates to move toward each other. a.-The hanging wall and footwall both move vertically. b.-Shearing is causing the plates to slide past each other. c.-The hanging wall moves down in relation to the footwall. d.-Compression is causing the plates to move toward each other.​