1. Rocks and The Rock Cycle

2. What is a Rock? metamorphic igneous and sedimentary
a ROCK is a collection of one or more minerals
3 TYPES
metamorphic
igneous and
sedimentary

3. IGNEOUS
1. Igneous
forms when magma or lava cools and hardens and solidifies
Examples: granite, basalt, obsidian, pumice

4. Types of Igneous Rocks
Intrusive Igneous – occurs when magma cools beneath Earth’s surface
Characteristic: Coarse grained
Example: Granite
Extrusive Igneous – occurs when lava cools and solidifies at the Earth’s surface
Characteristic: Fine grained
Example: Obsidian

5. SEDIMENTARY
2. Sedimentary – forms when sediment is compressed, cemented together and hardened
examples: sandstone, shale, conglomerate

6. How Sedimentary Rock is Formed
Pre-existing rock (mountains)
Weathering/Erosion (wind, water)
Forms Sediment (sand, pebbles, shells)
Deposition of sediment occurs (laid down)
Compaction and Cementation (squeezed and glued)
Sedimentary rock is formed (sandstone, shale)

7. METAMORPHIC
3 . Metamorphic (change form) – forms when existing rock is changed due to heat and pressure beneath Earth’s surface
Can form out of Igneous, Sedimentary, or other Metamorphic Rock
Foliated – grains are arranged in parallel lines
Non-Foliated – grains are arranged randomly, no lines

8. The Rock Cycle
Rock Cycle - the process by which one type of rock changes into another rock type
Has no beginning or end
Rock Cycle Song:

9. The Rock Cycle

10. http://www.phschool.com/atschool/phscie xp/active_art/rock_cycle/index.html

11. Brain Pop
Types of Rocks: tem/typesofrocks/ Rock Cycle: tem/rockcycle/