2. Minerals The substances that make up rocks and Earth’s surface

3. Rocks http://www.mnh.si.edu/earth/text/3_1_2_2.h tml http://www.mnh.si.edu/earth/text/3_1_2_2.h tml

4. ROCKS Every rock contains a bit of Earth's history Rocks are a record of the Earth’s natural history Rocks are continuously being recycled

5. How are rocks different than minerals? Minerals are homogeneous, naturally occurring, inorganic solids. Each mineral has a definite chemical composition and a characteristic crystalline structure. Rocks are made up of one or more minerals formed through either crystallization of molten magma, settling of particles or reheating and pressure applied to pre-existing rocks with no set chemical composition or atomic structure. Rocks are minerals but not all minerals are rocks.

6. How do we use rocks? Mount Rushmore is made from granite which is igneous rock Washington Monument is made of white marble which is a metamorphic rock

7. What is a Rock? Mixture of one or more minerals For Example: Granite contains 3 minerals Rock salt mass of single minerals Coal organic materials

8. Once a rock is formed does it remain the same type of rock always? Possibly but not likely !!!

9. Rocks are recycled into other rocks

10. What processes produce and transform rocks? Heat & Pressure (Plate tectonics) Weather or Erosion (surface forces)

11. The Rock Cycle Model representation of the interrelationships among the processes that form and transforms rocks

13. All rocks can be sorted into one of three types and identified by the processes that formed them Igneous rocks: cooling magma/lava Metamorphic rocks: heat and pressure deep inside Earth Sedimentary rocks: breaking and hardening of Earth’s surface

15. Homework Read text p 112-117 Ch 5 Study Guide due 12/2

16. ANY QUESTIONS?