LPKW+5.3

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=5.3 Sedimentary rocks=

Vocabulary

 * sediment**-small solid pieces of materials that come from living things or rocks
 * deposition**-the process by which sediment settle out of the water or wind carrying it
 * compaction**-the process that presses sediments together into layers
 * cementation**-the process in which dissolved minerals crystallize and glue particles toghether
 * organic rock**-rock in which plants and animals are deposited in thick layers

Outline

 * Sedimentary Rocks**
 * From sediment to rock
 * Erosion
 * Many forces break up rock into small fragments
 * Deposition
 * Sometimes sediments mays pile up
 * This forms sedimentary rock
 * Compaction
 * After time, sediments may pile up
 * This presses it into sedidimentary rock
 * Cementation
 * sediment slowly dissolve in water
 * The particles seep into other sediments
 * this slowly glue and crystalize sediments together
 * Types of Sedimentary rock
 * Clastic rocks
 * Shale
 * Sandstone
 * Conglomerate
 * Breccia
 * Organic rocks
 * Limestone
 * Coal
 * Chemical rocks
 * Rock that dissolve and then crystalize
 * Uses of sedimentary rock
 * Smelting iron ore(limstone).
 * The White house is made of sandstone