Convection currents in the mantle cause rock to slowly rise and fall, controlled by gravity. Undulation or waves in stratified rocks of Earth's crust are folds in layered rock formations. A fracture or zone of fractures between blocks of rock that allows movement is called a fault.

1. What is the process involving movement of mantle rock that
What is the process involving movement of mantle rock that is controlled directly by
gravity? What is undulation or waves in the stratified rocks of Earth’s crust?What is a
fracture or zone of fractures between two blocks of rock that allows the blocks to move
relative to each other?