Pumice is a solid material; it is not melted although it used to be melted rock when it was originally formed by a volcano.
Partially melted snow is........ partially melted snow!
Sleet
asthenosphere
No it is really subduction
It is called the asthenosphere.
Partially correct. Pumice forms from rapidly cooling lava containing volatiles (water and gas) and obsidian forms from rapidly cooling lava that doesn't contain volatiles. Bubbles from volatiles are frozen in place and cannot escape before the lava hardens forming pumice. Obsidian and pumice are sometimes found together although obsidian itself is relatively rare.
When old rocks are partially melted or squeezed, they can form metamorphic rocks. Examples include gneiss, schist, and marble. These rocks exhibit new textures and compositions due to the heat and pressure they have experienced.
Lava and magma are two forms of melted rocks
Water is not a major component of melted rock. The heat has turned any water into steam.
igneous
More felsic than the original chemistry of the rock that was partially melted
Pumice can be white, gray, or even pink.