Essential Question: What is the composition of rocks and how are they formed? Standards: S6E5b. Investigate the contribution of minerals to rock composition. S6E5c. Classify rocks by their process of formation. S6E5d. Describe processes that change rocks and the surface of the earth.

Composition of Rocks Minerals Rock fragments (smaller pieces of other rocks) Organic matter (remains of organisms and their wastes) Other natural materials

Rock Cycle Shows the three types of rock and the processes that form and change them

Use the Rock Cycle Diagram

Let’s start with what you’ve learned so far…

How do Igneous Rock form? Cooling

How do Metamorphic Rock form? Heat & Pressure Heat & Pressure

How do Sedimentary Rock form? Compaction & Cementation

Now let’s examine more ways that rocks can change

How would an Igneous Rock change to magma? Melting

How would an Igneous Rock change to sediment? Weathering & Erosion

Read the Weathering & Erosion Summary provided by the teacher Read the Weathering & Erosion Summary provided by the teacher. When instructed, turn to an elbow partner and take turns describing each process.

How would a Metamorphic Rock change to magma? Melting

How would a Metamorphic Rock change to sediment? Weathering & Erosion

How would Sedimentary Rock change to sediment? Weathering & Erosion

Compaction & Cementation Melting Weathering & Erosion Weathering & Erosion Compaction & Cementation Heat & Pressure Cooling Rock Cycle Animation from Prentice Hall

Which process in the Rock Cycle is similar to chewing gum? With a partner, come up with an analogy for compacting of sediment. What about weathering and erosion?

Study Jams: Rock Cycle Rock Cycle Song