| A | B |
|---|
| Metamorphic rock | Rock that has been changed by intense heat, pressure, and chemical reactions |
| Extrusive rock | Igneous rock that forms from cooled lava on the Earth's surface |
| Lava | Magma that comes out onto Earth's surface |
| Sediment | Solid material, such as sand, soil, pebbles, and organic matter, that is carried in air, water, or ice and settles out |
| Organic rock | Sedimentary rock that forms from the remains of living things |
| Chemical rock | Sedimentary rock that forms from chemicals dissolved in water |
| Sedimentary rock | Rock formed from pieces of other rock and organic matter that have been pressed and cemented together |
| Igneous rock | Rock formed from melted minerals that have cooled and hardened |
| Texture | Size of crystals in an igneous rock |
| Magma | Hot, liquid rock inside the Earth |
| Nonfoliated rock | Metamorphic rock that does not show bands |
| Rock cycle | Series of natural changes that cause one type of rock to become another type of rock |
| Clastic rock | Sedimentary rock made mainly from fragments of other rocks |
| Intrusive rock | Igneous rock that forms underground from cooled magma |
| Foliated rock | Metamorphic rock in which minerals have been rearranged into visible bands |
| Conglomerate | Clastic rock made of rounded pebbles cemented together |
| Rock | Natural, solid material made of one or more minerals |
