Try our latest Earthlearningidea and watch two halves of biscuit move away from each other. This activity investigates what happens when a viscous material (the syrup) is heated and rises, with the resultant moving apart of floating objects (broken biscuit) above it. This can be related to a rising plume of hot material beneath a constructive plate margin.Try this yourselves and let us know how you get on. There are now lots of Earthlearningideas to help pupils to understand plate tectonic theory - just visit our website.
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