What Is Normal Polarity?
Last Updated Apr 5, 2020 8:56:52 AM ET
The Earth has a magnetic field and two magnetic poles. Polarity is used to describe the location of the magnetic north pole and where it is presently located geographically. Normal polarity is when the magnetic north pole is located at the geographic south pole.
The Earth's magnetic poles have reversed multiple times, and predicting a reversal is highly difficult, as the reversals have no specific length or time frame. These reversals can be seen by studying rock layers, particularly those found mid-ocean, which show minerals that display normal and reversed polarity, depending on which side of the ridge the samples are taken from.
More From Reference

Tips and Tricks for Making Driveway Snow Removal Easier

Here’s How Online Games Like Prodigy Are Revolutionizing Education

What Are the Steps of Presidential Impeachment?

What Does George Soros' Open Society Foundations Network Fund?

The History of the United States' Golden Presidential Dollars

How the COVID-19 Pandemic Has Changed Schools and Education in Lasting Ways