Inside Earth Chapter 5 Rocks 5.1 Classifying Rocks https://www.youtube.com/watch?v=lE3jR_RhxO4

5.1 Classifying Rocks Mineral Composition and Color A mineral is a naturally occurring, inorganic solid, that has a crystal structure and a definite chemical composition. A rock is made of mixtures of minerals and other materials. Some rocks contain only a single mineral. Others contain several different minerals.

5.1 Classifying Rocks Learning Targets I can use characteristics to identify rocks. I can identify the three main groups of rocks.

5.1 Classifying Rocks Target: I can use characteristics to identify rocks. Two characteristics are: 1 Grain: size, shape, pattern (page 146) 2 Texture : smooth, glassy, chalky . Texture is described by the rocks grain size, pattern, and shape

5.1 Classifying Rocks Target: I can identify the 3 main groups of rocks Igneous rocks (section 5.2 page 148) From the cooling of molten rock

5.1 Classifying Rocks I can identify the 3 main groups of rocks 2. Sedimentary rocks (section 5.3 page 152) When layers of debris build up, are compressed and squeezed over time

5.1 Classifying Rocks I can identify the 3 main groups of rocks 3. Metamorphic rocks (section 5.5 page 160) When existing rock is changed by heat and pressure

5.1 Classifying Rocks Mineral Composition and Color Most of the Earth’s crust is made up of Granite (light color, high silica, less dense) . Most of the Earth’s ocean floor is made up of Basalt (dark color, low silica, very dense)

5.1 Classifying Rocks Texture Three ways to classify by texture. 1- Grain size

5.1 Classifying Rocks Texture Three ways to classify by texture. 2- Grain shape

5.1 Classifying Rocks Texture Three ways to classify by texture. 3- Grain pattern end