CCKH+5.2

= Igneous Rocks 5.2 =

Vocabulary:

 * Extrusive Rock:** igneous rock formed from lava that erupted onto Earth's surface.
 * Intrusive Rock:** igneous rock formed from magma, hardens beneath Earth's surface.
 * Porphyritic Texture:** a rock with large crystals scattered on a background of much smaller crystals.

Outline:

 * **Igneous Rocks**
 * Earth's surface- glowing mass of molten material
 * **Characteristics of Igneous Rock**
 * igneous rock classified according to origin. texture, mineral composition
 * Origin
 * extrusive rock
 * intrusive rock
 * Texture
 * depends on size and shape
 * porphyritic texture
 * Mineral Composition