To determine the viscosity of various
liquids: milk, lemonade, orange juice, vegetable oil, washing up liquid, shower
gel and tomato ketchup we measured the time it took for a marble to reach the
bottom of a filled cylinder.
To everyone’s surprise, when dropped into the ketchup, the
marble simply sat on the surface! We have decided to leave this over the long
weekend so see if there is any change on Monday....................