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Earth’s magnetic field
The Earth has a magnetic field extending thousands of kilometres into space. There is no big magnet inside the Earth. How the field is made, and why it occasionally reverses direction, is not fully understood.
Rights: The University of Waikato Te Whare Wānanga o Waikato
Published: 11 May 2011Updated: 21 November 2017Size: 470.98 KB
