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 ...

They're floating away. Floating away? But how? Did you ever wonder why hot air balloons float? You may already have some ideas. Think about them and then choose one of the options below that seems ...

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 ...