what is a rock? explain the igneous rock
Answers
Answer:
Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. ... Igneous rocks are divided into two groups, intrusive or extrusive, depending upon where the molten rock solidifies
Answer:
A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Rocks are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks.
Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust.