Question

how do magnetic stripes of iron in ocean rock provide evidence of seafloor spreading? they show when earth’s poles reversed. they show how the density of the seafloor has changed. they reveal a matching pattern on either side of the ridge. they reveal differences in the mineral composition of newly created rock.

Explanation:

Magnetic stripes of iron in ocean - rock form as new rock is created at mid - ocean ridges. As the seafloor spreads, the magnetic minerals in the new rock align with Earth's magnetic field at the time of formation. The pattern of normal and reversed magnetic stripes is symmetrical on either side of the ridge, providing strong evidence of seafloor spreading.

Answer:

They reveal a matching pattern on either side of the ridge.