1. Rocks and rock cycle

2. A rock is a NATURALLY OCCURRING, COHERENT (i.e. not a pile of loose materials) SOLID material, consisting of: a.ONE OR MORE MINERALS, or, b.GLASS (e.g. obsidian), or, c.ORGANIC MATTER (e.g. coal)

3. Classifying Rocks Geologists can classify a rock according to its origin by looking at: 1.Color 1.Texture – size, shape and pattern of the rock’s grains (particles of minerals or rocks) 1.Mineral composition

4. Igneous rocks Form when magma and lava become solid Sedimentary rocks Form either by cementing broken pieces of pre-existing rocks together (e.g. sandstone), or, by precipitation of minerals out of water solution (e.g. limestone) Metamorphic rocks Form when pre-existing rocks are altered by heat and/or pressure and/or hot fluids into new rocks without becoming anything else in between.

5. Video..Answer these questions 1.What are some examples that use rocks and minerals? 2. Name examples of each type of rock 3.What are processes that can change rocks? Name at least 5 4.What is soil? What are the different types?

6. Group Activity 1.Get in groups of 3 (Guess what? You get to pick your own group!) 2.Follow directions on the worksheet to learn about the different types of rocks 3.Please give noise level at a minimum and be productive! Worksheet will be due at the end of class.

7. Any existing rock Becomes magma Which cools to make Igneous rocks That weathers Erodes Deposits and lithifies, Sedimentary rocks Metamorphic rocks Becomes Exposed to: Increased pressure High heat Hot fluid That melts Becomes