ScienceA19

Science A19: Changing Water’s Surface

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Award-winning video and lesson investigations for young children on the topic of surface tension and forces

Product Description

Video and lesson investigations on the topics of surface tension and forces. Key concepts include:

  • Water behaves as though it has a surface ‘skin’.
  • Washing up liquid is one substance which breaks up the surface ‘skin’.
  • Floating objects can indicate changes taking place in the surface of water. Forces in the surface usually cancel out.
  • Some chemicals can reduce the surface tension in part of the surface.
  • The imbalance in forces causes movement.
  • The behaviour of other objects can sometimes be used as indicators of invisible processes taking place.

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