Question

what is the orientation of the magnetic stripes of iron contained in rocks that support the idea of seafloor spreading?
east and west
north and east
south and west
north and south

Explanation:

Seafloor spreading is supported by magnetic stripes in rocks. These stripes are oriented parallel to the mid - ocean ridges, and their magnetic orientation (due to the Earth's magnetic field at the time of rock formation) is north - south. The iron - bearing minerals in the rocks align with the Earth's magnetic field, and the stripes showing this alignment run north and south, parallel to the ridge axis.

Answer:

D. north and south (assuming the options are labeled A - D as east and west, north and east, south and west, north and south respectively)