Conduction and Convection

Two flasks hold colored water, one yellow and the other blue. Set the starting temperature of each flask, choose a type of material to connect the flasks, and see how quickly the flasks heat up or cool down. The flasks can be connected with a hollow pipe, allowing the water in the flasks to mix, or a solid chunk that transfers heat but prevents mixing.

  Launch Gizmo


  • Observe that heat flows from warmer objects to cooler ones until temperatures equalize.
  • Measure heat transfer via conduction and convection.
  • Observe that metals are better conductors than nonmetals.
  • Determine that hot fluids tend to rise while cold fluids tend to sink.
  • Compare conduction and convection.
  • conduction, conductor, convection, insulator