Different fluids have varying unit weights, also known as liquid density.

On Monday the 11th of April 2016, we completed an experiment on water density using a pint glass, a range of liquids and solids.

First we filled the glass with water, then we started to fill it up. Here is the order from less dense to most dense:

  • Vegetable oil
  • Washing up liquid
  • Water
  • Milk
  • Tomato
  • Honey
  • Beads
  • Screw

Our end result:

IMG-20160418-WA0000 (2)

Doesn’t it look very appetising! Not!

Challenge question: What makes some objects sink deeper into the column while some hardly sink at all?

We really enjoyed this experiment and learnt lots! 🙂