The last pole reversal occurred ________ years ago and, based on magnetic field decay, we are approximately ________ years from entering the next phase.
A) 1 million; 200,000
B) 20,0000; 50,000
C) 1,000; 50
D) 790,000; 1,000

Question

Quizplus · Accepted Answer

The last magnetic pole reversal, known as the Brunhes-Matuyama reversal, occurred approximately 790,000 years ago. Based on current magnetic field decay rates, scientists estimate we could be around 1,000 years from entering the next phase of a reversal.

The Last Pole Reversal Occurred ________ Years Ago And, Based