Saturday, 4 December 2010

Igneous rocks and different crystal sizes

The latest Earth Learning Idea ´Why do igneous rocks have different crystal sizes?´simulates crystallisation from a melt at different rates of cooling. This activity can be included in lessons on the rock cycle to model the cooling and crystallisation of magma to form igneous rocks.
This is one of many activities to try when teaching the rock cycle. Search the ELI Keyword Index for more.

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