Question

How did scientists determine how old the ocean floor is?

Answer 1

Scientists can determine the age of the seafloor by examining the changing magnetic field of our planet. Every once in a while, the currents in the liquid core, which create the Earth's magnetic field, reverse themselves: it is called a geomagnetic reversal. This has happened many times throughout Earth's history.

Answer 2

crust

Step-by-step explanation:

if bigger than older smaller new