This latest Earthlearningidea 'Frozen magnetism; preserving evidence of a past magnetic field in wax' is our latest ELI+ activity. It is a demonstration of how the evidence for the magnetic field around a bar magnet may be preserved, even after the magnet has been removed. This gives an analogy for the three-dimensional magnetic field of the Earth, with a North and a South Pole, but not for the origin of the Earth's magnetic field.There are lots more free activities for you to download on our website.
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