Year 8 students are learning about the density of different objects. Density is the measure of the amount of matter crammed into the object. The students made density columns showing the different densities of many common household products such as honey and oil. Less dense liquids float above denser liquids.
Ever wonder why ice floats on water? Why oil sits on top of puddles?
Have you ever wondered why it was easier to float in the ocean than a pool? It's because the ocean contains a high concentration of salt causing the water to be denser and allowing you to float.