NEED HELP ASAP!
**As magma rises from the mid-ocean ridge, it cools and solidifies. As this magma.
solidifies, some of the minerals align with Earth's magnetic field. Every few million
years, Earth's magnetic field reverses. The reversal is recorded in the magma that
solidified after leaving the mid-ocean ridge. In this picture, these magnetic reversals
are indicated by dark and light bands.
How can scientists tell when the reversals of the magnetic field occurred?
A) by measuring the thickness of the different bands of the oceanic crust
B) by measuring the distance between the mid-ocean ridge and the ocean floor band
C) by measuring the amounts of minerals that aligned to earths magnetic field in the different bands
D)by measuring the strength of earths magnetic field recorded in the solidified magma of the oceanic crust
