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  • Two jars holding a salt solution with a string between them
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 21 March 2024 Size: 2.9 MB Referencing Hub media

    The jars hold a solution of Epsom salts. The mineral solution is carried along the string to its lowest point. When the water evaporates, it leaves the minerals behind. Each drip deposits more minerals – growing the stalactite. A stalagmite is forming under the stalactite. Dye has been added to the solution to aid observation of the solution’s movement along the string.

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