College of Agriculture, Engineering
and Science (CAES)

STEC@UKZN live experiment of the week – Density and what it has to do with oceans

Join us every week for a short fun science experiment.
This week: We will look at the two main factors that affect the density of ocean water.

What you will need for this experiment:

  • Hot and cold water
  • 4 similar glasses
  • 2 old CD’s or DVD’s
  • Food colouring
  • Salt
  • a large bowl

Please send an e-mail to if you want to join us for this fun activity.

The event is finished.