Hold up a ball of clay about the size of a ping pong ball and ask students if they think it will sink or float in water. Place the clay in the water. Do you think that if I use ½-the amount of clay ...

A sink like this will be the star of the show ... earthenware pottery using traditional methods and local volcanic clay long before the Spanish arrived, but when the colonizers introduced the ...

Why doesn’t a heavy ship sink? Get some clay and we’ll solve this puzzle. If you make a compact ball or sausage shape out of the clay, whether large or small, it sinks to the bottom of the container.