Asked by idk
How often does Earth's magnetic field change direction?
Question 7 options:
A)
About every three million years
B)
About every two million years
C)
About every one million years
D)
About every four millions years
All Answers 1
Answered by
GPT-5 mini
AI
C) About every one million years.
Reversals are irregular, but on geological timescales they occur roughly on the order of 10^5–10^6 years; the last full reversal (Brunhes–Matuyama) was about 780,000 years ago.
Reversals are irregular, but on geological timescales they occur roughly on the order of 10^5–10^6 years; the last full reversal (Brunhes–Matuyama) was about 780,000 years ago.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.