Cooling to a solid.
Metamorphic rocks become igneous rocks by melting from heat and pressure, remnants of which may cool from melt (magma) and become components of igneous rock.
lava and/or magma cools and forms igneous rocks. igneous rocks go through weather and erosion which forms sediments. these sediments are collected and compacted. this causes sedimentary rocks. the sedimentary rocks go through weather and erosion as well as being exposed to heat and pressure. this causes metamorphic rocks. metamorphic rocks go through heat and pressure and then they melt and become lava or magma again. this is called the rock cycle.
Because that is the very definition of igneous rock.
igneous rocks
Magma is molten rock beneath the Earth's surface. When magma cools and solidifies, it forms igneous rocks. The cooling process can occur either slowly beneath the surface (intrusive igneous rocks) or rapidly on the surface (extrusive igneous rocks).
Cooled and solidified magma that rests below the surface becomes intrusive igneous rock. When magma is erupted onto the surface, then cools and solidifies, it becomes extrusive igneous rock. The major rock classification for cooled magma or lava would be IGNEOUS.
Well, Igneous Rocks are formed from Magma and the bones of an animal or a plant wouldn't have the time to become a fossil
Igneous rocks are formed when magma solidifies, or becomes solid. Rocks become magma when they undergo extreme heat.
Magma is molten rock, and igneous rock is cooled magma.
Igneous Rocks - Rocks formed by crystallization from a melt (magma)
Igneous rocks form from the solidification of magma. This process can occur either underground (intrusive igneous rocks) or at the surface (extrusive igneous rocks), depending on the cooling rate of the magma. Examples of igneous rocks include granite, basalt, and obsidian.
In order to form magma, sedimentary, metamorphic, or igneous rocks must be exposed to high temperatures and pressures deep within the Earth's crust. This process causes the rocks to partially melt, forming molten rock called magma.