CSTC+5.1

toc

Vocabulary

 * Texture**: to geologists it is like the feel of the rock's surface


 * Grains**: a kind of minerals rocks that made up a rock


 * Igneous rock**: Forms form the cooling of molten rock-either magma below the surface or lava at the surface


 * Sedimentary rock**: forms when particles of other rocks or the remain of plants and animals are pressed and cemented together


 * Metamorphic rock**: forms when an existing rock is changed by heat ,pressure or chemical reactions

Outline

 * How geologists Classify Rock**
 * Texture
 * Grain Size
 * Grain Shape
 * Grain Pattern
 * No Visible Grain
 * Mineral Composition


 * Origin**
 * Igneous rock
 * Sedimentary rock
 * metamorphic rock