* Density is Key: Whether a rock floats or sinks depends on its density compared to the density of water. Density is mass per unit volume.
* Rock Variation: Rocks are made of different minerals and can have varying densities. Some rocks, like pumice, are very porous and contain air pockets, making them less dense than water. Others, like granite, are much denser.
* Exceptions: Even some rocks considered dense can have unique formations or contain air pockets that allow them to float temporarily.
So, the answer is not about specific rock types, but about their density. Here's what you can say:
* Some rocks float: Rocks with lower density than water will float.
* Most rocks sink: Rocks with higher density than water will sink.
Examples:
* Floats: Pumice (volcanic rock full of air pockets), some porous limestone
* Sinks: Granite, basalt, marble
Let me know if you have any other questions about rocks!
