Question 14
A lava lamp uses the difference in density between paraffin wax and a surrounding liquid. When heated, the wax becomes less dense and rises. As it cools, it becomes denser and sinks. This cycle causes the wax globules to continuously move up and down inside the lamp.
Tammy constructed a halite fountain as shown in the diagram below. There are two fluids in the fountain — coloured water and a solution containing the halite, sodium chloride.
How did the density of the sodium chloride solution compare to that of the coloured water? Why was this important for the fountain to work?
Tammy constructed a halite fountain as shown in the diagram below. There are two fluids in the fountain — coloured water and a solution containing the halite, sodium chloride.
How did the density of the sodium chloride solution compare to that of the coloured water? Why was this important for the fountain to work?
