Pumice is a volcanic rock that floats. Compared with the density of water, its density is
A)less.
B)the same.
C)more.

Question

Quizplus · Accepted Answer

Pumice is formed from volcanic eruptions that create a frothy foam of gas bubbles mixed with lava. This foam solidifies as it cools, forming the lightweight and porous rock that is pumice. Due to its high porosity, pumice has a lower density than water and can float on its surface. Therefore, the best choice is A) less, as pumice has a lower density than water.

Pumice Is a Volcanic Rock That Floats