Pumice is a frothy, bubbly, light volcanic rock.
pumice
Pumice is volcanic rock formed from frothy lava. It will usually float on water because of all the gas bubbles in it.
The rock formed is very light and is known as pumice or pumice stone.
Pumice is a textural term for a volcanic rock that is a solidified frothy lava typically created when super-heated, highly pressurized rock is violently ejected from a volcano
Pumice is simply a frothy, gas entrained volcanic glass, a result of the extremely rapid cooling of felsic lava after eruption.
I learned about this when I was in the seventh grade. Pumice is volcanic. It was made by nature when lava and gases was thrown out of a volcano. As the gas bubbles escaped from the lava, it become frothy. When the lava cooled and hardened, the result was a very light rock material filled with tiny bubbles of gas.
Obsidian is also called volcanic glass, an extrusive, largely non-crystalline, felsic igneous rock. Pumice is also a frothy form of obsidian.
Pumice
Yes,it is a volcanic rock.
gnawing to prevent abnormal teeth growth
Pumice.