Question

1. what does the pattern of magnetic polarity on both sides of the mid - atlantic ridge suggest about earths magnetic field over time? mid - atlantic ridge oceanic crust mantle key magnetic polarity of the bedrock normal reversed magnetic polarity changes only affect the continental crust, not the oceanic crust. magnetic reversals occur randomly and are not recorded in the oceanic crust. earths magnetic field has reversed many times, and these changes are recorded symmetrically in the oceanic crust. earths magnetic field has never changed direction.

Explanation:

The magnetic polarity pattern on either side of the Mid - Atlantic Ridge shows alternating stripes of normal and reversed polarity. This indicates that Earth's magnetic field has reversed many times over geological history, and these changes are symmetrically recorded in the newly formed oceanic crust as it spreads away from the ridge.

Answer:

Earth's magnetic field has reversed many times, and these changes are recorded symmetrically in the oceanic crust.