Inside Earth Chapter 5.5 Pages 162-164 Metamorphic Rocks Inside Earth Chapter 5.5 Pages 162-164

Formation of Metamorphic Rocks Heat and Pressure deep beneath Earth’s surface changes rock Temperatures of 200⁰ C, Pressure of 300MPa 200+ degrees C = Temp Pressure = 300MPa, or 3,000x atmospheric pressure

Formation of Metamorphic Rocks Rocks change in… Appearance Texture Crystal structure Mineral composition

Which is another likely Metamorphic change? Weight increase B Density increase C Density decrease D Weight decrease

Classifying Metamorphic Rocks Foliated Grains arranged in parallel layers or bands May split along the bands or layers Non-Foliated Mineral grains are arranged randomly Do not split into layers.

Classifying (Parent Rocks) Foliated Parent Rock Metamorphic Rock Granite Gneiss Shale Slate Non-Foliated Parent Rock Metamorphic Rock Limestone Marble Sandstone Quartzite

The grains in Non-foliated rocks are arranged in a specific way. True F False – arranged randomly

Uses of Metamorphic Rocks Marble Easily polished Used for buildings and statues Slate Easily splits into flat pieces Roofing, walkways, chalkboards

Metamorphic rocks come from… Igneous rocks B Sedimentary rocks C Other metamorphic rocks D Every kind of rock