In this activity, students look at what happens when hot and cold water meet.

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

  • discuss how temperature affects the density of water
  • discuss how temperature and density affect ocean currents
  • discuss how wind can mix up the layers of warm and cold water.

Download the Word file for:

  • introduction/background notes
  • what you need
  • what to do
  • student handout
  • extension idea.
    Published 17 July 2007, Updated 22 January 2014