They can be formed underground or above ground. Underground, they are formed when melted rock, called magma, deep under the earth's surface is trapped in small pockets. As these pockets of magma cool slowly underground, the magma develops into igneous rocks.
Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's crust. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground.
Igneous rock is formed when magma cools and becomes solid.
Intrusive igneous rocks are thusly formed.
Extrusive igneous rock is formed from the solidification of lava.Intrusive igneous rock is formed from the solidification of magma.
Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.
igneous
Igneous rock is formed when magma cools and becomes solid.
Igneous rock is formed.
An igneous rock formed from magma is intrusive.
Intrusive igneous rocks are thusly formed.
Igneous rock is formed from lava that has cooled and, of course, hardened.
Igneous rocks are formed when lava cools. After a eruption, the lava cools, and the igneous rock is formed.
Extrusive igneous rock is formed from the solidification of lava.Intrusive igneous rock is formed from the solidification of magma.
Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.
igneous
igneous rock
False Sedimetary rocks can be formed from changes in igneous rock, and igneous rock can be from changes in sedimentary rock.
the type of rock formed when lava or magma cools is igneous rock..