If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float. Density is a characteristic property of a substance and doesn’t depend on the ...

Floating is when something stays on top of the surface of the water, like a boat. Sinking is when something drops beneath the surface of the water and falls to the bottom, like a stone.

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 ...