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    In this activity, students make a Cartesian diver to demonstrate the relationship between volume, mass and density. A similar principle is used in Argo scientific floats.

    By the end of this activity, students should be able to:

    • describe some of the factors that affect what makes an object float or sink
    • understand how volume, mass and density are related
    • understand how Argo floats rise and sink in the ocean.

    Download the Word file for:

    • introduction/background notes
    • what you need
    • what to do
    • extension ideas.
      Published 18 June 2010 Referencing Hub articles