Contacting GameStop to Verify Business Hours. 1  Phone Number: If you need to contact the customer service department, you can call 1-800-883-8895.  Email Contact: When you need to send an email to the customer service department, you will need to use the customer feedback form [+].
These happen about once in a decade with the last 45 degree temperature change in a calendar day happening on April 18, 1985. The Twin Cities had a drop of 49 degrees on January 29 and this tied for the second largest temperature change from midnight to midnight.
The last major reversal was 781,000 years ago. Because of changing temperatures and fluid flows, the strength of the magnetic field varies, and the positions of the north and south magnetic poles shift. These shifts leave traces in rocks.When lava cools, metal oxide particles within the rock become frozen in the direction of the prevailing magnetic field.s a result we know there have been about 170 magnetic pole reversals during the last 100 million years, and that the last major reversal was 781,000 years ago.