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 hidden geological layer, located between 254 and 410 miles (410 and 660 kilometers) beneath the Earth’s surface, covers ...

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 closest to why you think balloons float.

Objects that are more dense than water sink, while objects that are less dense than water float. Disposal: The water used in this activity can be disposed of down the drain. If accepted locally, ...

Participants played a sink-or-float game on the computer during the study. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by ...

It shows how water can hold more than its brim due to surface tension, how pressure increases with depth, and how buoyancy affects whether objects float or sink. Through various experiments ...