Some objects float in water and other sink. But did you know that you can change whether something floats or sinks by adding a substance to the water? Let's try it and see! Pour water into a cup until ...

This means that the density of the overall object will increase and be more likely to sink. Ask students to explain how this principle can be used to explain how a weight belt can help a SCUBA diver ...

Can you think of some other things that float and sink? Join Kit and Pup to find out more about floating and sinking. Narrator: Are these boats floating on the water? Yes. Is this leaf floating on ...