A | B |
basaltic | igneous rock formed from magma rich in magnesium and iron |
cementation | natural bonding process caused by water moving thru rock and soil |
element | substance that is made of only one type of atom |
extrusive | fine-grained igneous rock formed at Earth's surface |
foliated | metamorphic rock with grains lined up in parallel lines |
granitic | silica-rich igneous rock less dense than basaltic |
intrusive | igneous rock with large crystals |
lava | molten rock that flows from volcanoes |
metamorphic rock | heat + pressure act on rock to change its form or composition |
mineral | inorganic solid that has a definite chemical composition |
nonfoliated | metamorphic rock whose mineral grains do not form layers |
pressure | amount of force exerted per unit of area |
rock | mixture of one or more minerals |
rock cycle | how rocks slowly change from one form to another through time |
sediments | loose materials like fragments, grains and remains moved by wind, water, ice, gravity |
weathering | mechanical or chemical surface process that breaks rock |