Question

which statement describes the cyclic nature of seafloor spreading?
continenis are created.
new oceanic crust is created.
volcanoes erupt and remove crust.
old crust gets thicker at subduction zones.

Explanation:

Seafloor spreading is a geological process where new oceanic crust is formed at mid - ocean ridges. As magma rises and solidifies, it creates new crust. This process is cyclic as the new crust moves away from the ridge over time.

• Continents are not created by seafloor spreading (continental crust formation is a different process).
• Volcanoes at mid - ocean ridges add crust (by magma solidifying) rather than remove it.
• At subduction zones, old crust is recycled (subducted) rather than getting thicker.

Answer:

New oceanic crust is created.