Volcanic rocks are made primarily out of silicate minerals. Which minerals are present depends on the rock. Some volcanic rocks are made partly or entirely out of glass.
Igneous rock.
all volcanoes are made of rocks
Three different types of volcanoes are 1) Shield volcanoes; they are large mountains with gentle slopes. 2) Cinder cones volcanoes; they are small volcanoes made of hardened lava chunks called cinders. And the last one is 3) composite volcanoes; they are medium sized mountains made up of layers of lava that alternates with cinders. That is it.
Yes they can. When magma dries it turns into igneous rock.
Obsidian and Basalt are both Igneous rocks. They are made from hardened lava from volcanoes.
Sedimentary rocks are found generally at the bottom of an ocean as this is where eroded material falls. Igneous rocks are found near volcanoes as they are molten rock. Metamorphic rock can be found anywhere, as it is formed in the ground and slowly comes up to the surface (but it is made of igneous or sedimentary rocks.)
all volcanoes are made of rocks
No. Shield volcanoes have gentle slopes composed almost entirely of cooled lava flows.
locked up in rocks
yes. They are made form harden lava
Three different types of volcanoes are 1) Shield volcanoes; they are large mountains with gentle slopes. 2) Cinder cones volcanoes; they are small volcanoes made of hardened lava chunks called cinders. And the last one is 3) composite volcanoes; they are medium sized mountains made up of layers of lava that alternates with cinders. That is it.
No. Most rocks and earth are not directly from volcanoes.
igneous rock. It is made from hardened magma. That's from volcanoes. I don't think earthquakes make rocks.
No. Plutonic rocks are igneous rocks that hardened underground. Rocks that form on volcanoes are volcanic rocks.
Because the lava from volcanoes form igneous rocks
Yes they can. When magma dries it turns into igneous rock.
Igneous Rocks.
http://en.wikipedia.org/wiki/Volcano volcanoes can be composed of a variety of igneous rocks.