1. What are Rocks?
Cornell Notes pg. 145

2. What is a Rock?
Naturally Occurring
Solid
Mixture of one or more minerals
May contain organic matter

3. Discuss…
How are Rocks and Minerals similar?
How are they different?

4. Classifying Rocks
Rocks are divided into three main categories based on how they were formed
Igneous
Sedimentary
Metamorphic

5. By composition- the minerals a rock contains.
Classifying Rocks
By composition- the minerals a rock contains.
Granite= quartz + biotite + feldspar
Limestone= calcite + argonite
By texture- the size, shape, and positions of the grains.

6. Think…
Do rocks always stay the same?

7. How do rocks change?
Weathering- rocks are broken down into smaller rocks and sand, (sediment)
Erosion- sediment is removed from its source.
Deposition- area where sediment comes to a rest.

8. Heat and Pressure- can morph the rock or even cause the rock to melt and form magma.

9. Continual process by which new rock forms from old rock
Rock may be changed from one type to another
Rock is Recycled!
What is the
Rock Cycle?