SKKH+5.1

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**vocabulary**

 * texture** - the look and feel of a rocks surface determined by the size ,shape and pattern of a rocks grains.
 * grain** - a particular of mineral or other rock that gives a rock its texture.
 * igneous rock** -a type of rock that forms from the cooling of molten rock at or below the surface.
 * Sedimentary rock** -a type of rock that forms when particels from other rocks or the remains of plants and animals are pressed and cemented together
 * metamorphic rock** - a type of rock that forms from an existing rock that is changed by heat ,pressure ,or chemical reactions.