Pour water on lava
Making a cutting tool using obsidian rock is quite easy. The cavemen used to smack pieces of obsidian with other rocks until the obsidian was thin and sharp as a knife.
Obsidian is part of the Granite family of igneous rocks.
Obsidian is formed from very rapidly cooling lava.
No. Pumice and obsidian are rocks composed mostly of glass.
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
Making a cutting tool using obsidian rock is quite easy. The cavemen used to smack pieces of obsidian with other rocks until the obsidian was thin and sharp as a knife.
Ancient people used obsidian ( rocks used to make weapons)
Obsidian is part of the Granite family of igneous rocks.
obsidian obsidian
because an obsidian rock has low silica
Obsidian is black glass formed by volcanoes.
Igneous rocks
Obsidian
obsidian
Obsidian is formed from very rapidly cooling lava.
Obsidian and coal are both rocks and they are formed by lava
No. Pumice and obsidian are rocks composed mostly of glass.