How Do Magnetic Anomaly Patterns on the Ocean Floor Best

question 58

Multiple Choice

How do magnetic anomaly patterns on the ocean floor best serve as evidence for seafloor spreading?

• A) The symmetry on either side of mid-ocean ridges shows that new crust is created and then split apart.
• B) Their patterns prove that the Earth's magnetic field reverses every few hundred years.
• C) They show that island arc volcanism creates new oceanic crust at the mid-ocean ridges.
• D) The symmetry on either side of mid-ocean ridges shows that transform boundaries are sliding boundaries.