Question 16
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.
You are asked to advise Tammy on how she can improve her halite fountain. Would you use first-hand experience, secondary resources or both to provide your recommendations? Why?
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.
You are asked to advise Tammy on how she can improve her halite fountain. Would you use first-hand experience, secondary resources or both to provide your recommendations? Why?
