ESAY+5.3

=**Sedimentary Rocks**= = = =Vocabulary=


 * Sediment**: Small solid pieces of material that come from rock or living things.
 * Erosion**: The process by which water,ice,wind or gravity moves from fragments of rock and soil.
 * Depositio****n****:** A process by which sediment settles out of the water or wind carrying it.
 * Compaction:** The process that presses sediments together.
 * Cementation:** The process in which dissolved minerals crystalize and glue particles of sediment together.
 * Clastic rock**: A sedimentary rock that forms when rock fragments are squeezed together.
 * Organic rock**: A sedimentary rock that forms where the remains of plants and animals are deposited in thick layers.
 * C****hemical rock**: A sedimentary rock that forms when minerals that are dissolved in a solution crystallize.