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Bulk Pumice - The Rock That Floats

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$5.95
Rating:
( 1 product review )
 
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Product Info

bulk-pumice-1.jpgGive your students a rock that floats! These are samples of real volcanic (igneous) pumice. They were filled with volcanic gasses when they were blasted from a volcano and the gasses were trapped as the rock cooled. The trapped bubbles allow the rock to float. A great demonstration of density or the perfect student take-home when studying rocks & minerals or density. Each rock is 1-2 inches (2.5-5 cm) wide. Sold in packs of 25.

 

Product Reviews

  1. Just as described.

    Posted by Thomas D. on 01 26 2014

    High quality pumice.
    Not a lot of pumice dust after shipping.
    Good product.