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Igneous Rocks. Inside Earth Chapter 5.2 Pages 150-153. Igneous Rocks. Form from Lava or Magma Made of mineral crystals Classified according to: Origin Texture Mineral Composition. Origin of Igneous Rocks. Classified according to where they formed. Origin of Igneous Rocks.
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Igneous Rocks Inside Earth Chapter 5.2 Pages 150-153
Igneous Rocks • Form from Lavaor Magma • Made of mineral crystals • Classified according to: • Origin • Texture • Mineral Composition
Origin of Igneous Rocks • Classified according to where they formed.
What is a Crystal? • A solid in which the atoms are arranged in a pattern that repeats again and again.
Igneous Rock Textures • Depends on the size and shape of it’s mineral crystals.
Mineral Composition • Most of Earth’s rocks contain silica (silicon dioxide, SiO2)
Silica Content Mafic Basalt Gabbro • Felsic • Granite • Rhyolite • Intermediate • Diorite • Andesite
Uses of Igneous Rocks • Igneous rocks are useful because they are hard, durable and dense
What to Work On • Read the textbook, pages 150-153 • Answer questions 1-4 on page 153 DUE: Friday, November 4th
Project Topics • Plasma • Dark Matter • Hot air balloons • Light (double-slit experiment) • Elements (Uut, Uuq, Uuh) • History of Enlgish / metric units • TauTona