I would circle the Beach ball because it is designed to float in water. The Rock, Cruise ship, Quarter, and Saturn are denser than water and would sink.
Some objects float in water because they have a lower density than water. Density is a measure of how much mass is contained within a given volume. If an object is less dense than the water it displaces, it will float. On the other hand, objects that are denser than water will sink. Density depends on the mass of the object and the volume it occupies.
An objects below, circle the ones you think would float in water. Rock, Cruise ship, Quarter, Saturn, and Beach ball. Why do some objects float, while others sink?
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