| A | B |
|---|
| basalt | example of an igneous rock |
| rock | natural, solid material made of one or more minerals |
| element | substance that is made of only one type of atom |
| extrusive rock | igneous rock that forms from cooled lava on the earth's surface |
| texture | size of crystals in an igneous rock |
| intrusive rock | igneous rock that forms underground from cooled magma |
| lava | magma that comes out onto the earth's surface |
| metamorphic rock | heat + pressure act on rock to change its form or composition |
| nonfoliated | metamorphic rock whose mineral grains do not form layers |
| pressure | amount of force exerted per unit of area |
| 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 |
| conglomerate | clastic rock made of rounded pebbles cemented together |
| Chemical Rock | sedimentary rock that forms from chemicals dissolved in water |
| Clastic Rock | sedimentary rockmade mainly of fragments of other rocks |
| Magma | hot, liquid rock inside the earth |
| Sandstone | example of a sedimentary rock |
