Obsidian is formed from very rapidly cooling lava.
slow
Slowly...
Obsidian
Obsidian is formed and cooled so rapidly from lava that it is a glass, not crystalline in structure. The cooling is obviously very rapid and solidification could probably measured in minutes.
Obsidian is formed from very rapidly cooling lava.
Granite cools slow. Obsidian cools fast, so faster than granite.
slow
Slowly
Slowly...
Yes the Obsidian does cool quickly and the vesicular basalt
Obsidian
if a fast and expecive car yes.But a slow and ugly car no.
Obsidian is formed and cooled so rapidly from lava that it is a glass, not crystalline in structure. The cooling is obviously very rapid and solidification could probably measured in minutes.
obsidian
Cool water moves slow because the molecules are moving slow. In hot water, molecules are moving fast, thus, hot water seems to move faster than cold water at times.
Obsidian are volcanic Glasses that cool very rapidly. The crystals are not allow to arrange them self's that is why Obsidian has not 3d internal structure. The are Igneous Glasses