A | B |
rock | a naturally occurring solid mixture of one or more minerals or organic matter |
rock cycle | the series of processes in which a rock forms, changes from one type to another, is destroyed, and forms again by geological processes |
erosion | the process by which wind, water, ice, or gravity transports soil and sediment from one location to another |
deposition | the process in which material is laid down |
processes that shape the Earth | weathering, erosion, deposition, heat and pressure |
uplift | the movement within the Earth that causes rocks inside the Earth to be moved to the Earth's surface |
use/value of rocks | buildings, monuments, and roads |
use of rock in NC | dams, roads, bridges, buildings, monuments, fertilizer, animal feed, and pesticides |
composition | the chemical makeup of a rock; describes either the minerals or other materials in the rock |
texture | the quality of a rock that is based on the sizes, shapes, and positions of the rock's grains |
Rock classification | composition & texture |
igneous rock | magma in the Earth's crust that has risen to the surface and cools and solidifies |
metamorphic rock | rock that is forced downward and is exposed to heat and pressure |
magma | rocks that are partially or completely melted |
sediment | igneous rock at the Earth's surface that is weathered and wears away |
sedimentary rock | sediment that washes down into rivers and oceans and is pressed and cemented together |