So my friend told me this, i don't know if its right but here you go!
When new rock forms from magma old rocks gets pulled away. hot rocks gets bigger and goes up to the surface than gets cold and heavy and sinks back down.
The rocks of the ocean floor are not consistent and do show past reversal of polarity. The statement in the question is false.
The youngest rocks on the ocean floor are typically found along mid-ocean ridges. These areas are where new oceanic crust is formed through volcanic activity and the process of seafloor spreading. As the magma cools and solidifies, it creates new rocks that are relatively young compared to rocks found in other parts of the ocean floor.
The ocean floor is not smooth.The ocean floor is made up of rocks, ledges and ditches.
because
The youngest rocks on the ocean floor are located at mid-ocean ridges. These ridges are always found at divergent boundaries.
There are no rocks on the ocean floor because they turn to sand. The moving of the water gradually wears away at the rocks.
sand,rocks
broken up rocks
It is believed that old rocks are rare on ocean floors bevause the floor has manny remains and we are not unable to reach them
Ridges
broken up rocks
mud