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Detailed File Information
Magnetic Rock Polarity Data Table
File Name m00006.data03.xls
Data Type spreadsheet
Computer Program Microsoft Excel 2000
File Size 14.00 KB - 1 file
Expert Level Elementary School (Grade 3-6)
Contributor ERESE Database Team
Source Doell & Dalrymple 1966
Resource Matrix The Earth's Magnetic Field
Description
The table contains data for magnetic polarities of 6 rock samples taken in New Mexico. These rocks act as a storage device for magnetic field data because they can record the strength and direction of the magnetic field at the time of their formation. They are able to record the magnetic information after the rocks cool below a temperature called the Curie Temperature. The data in the table shows evidence that the magnetic field has reversed throughout history.
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