Aim: How are igneous rocks formed? Do Now: Take out new section of notes and label it rocks.

Igneous Rocks

Rocks that form when natural, molten (liquid) rock-forming material cools into a solid

Liquid rock BENEATH Earth’s surface is called magma

When magma comes out onto or above Earth’s surface it becomes LAVA

When magma solidifies beneath Earth’s solid surface the rocks are called INTRUSIVE

When lava solidifies on or above Earth’s solid surface the resulting rock is EXTRUSIVE

Formation All igneous rocks are a result of the solidification of magma or lava. Solidification can also be known as CRYSTALLIZATION

Crystal Size

Texture Glassy, Fine, Coarse, Very Coarse Non-vesicular vs Vesicular

Mineral Composition