Question

5 multiple choice 1 point
which type of plate boundary has helped scientist understand how and when the earths magnetic poles have flipped in earths past?
subduction plate boundaries
divergent plate boundaries
transform plate boundaries
convergent plate boundaries

Explanation:

At divergent plate boundaries, new oceanic crust forms as tectonic plates pull apart. As magma cools and solidifies here, iron-rich minerals align with Earth's magnetic field at the time. Over millions of years, successive layers of this crust record reversals of the magnetic poles, creating a "magnetic stripe" pattern that scientists use to study past pole flips.

Answer:

Divergent plate boundaries