CJKN+5.1

toc

Vocabulary
Grains:A particle of mineral or other rock that gives a rock its texture. Texture:The look and feel of a rock's surface determined by the size, shape and pattern of a rock's grain. 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 particles 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.

Outline

 * How geologist classify rocks
 * color
 * texture
 * Texture
 * look
 * feel
 * grain size
 * grain shape
 * grain pattern
 * no visible grain
 * Mineral composition
 * crystals
 * Origin
 * igneous
 * sedimentary
 * metamorphic