| A | B |
|---|
| rock cycle | the continuous series of changes that rocks undergo |
| igneous rock | rock that forms when melted rock cools and hardens |
| metamorphic rock | new rock that forms when existing rock is changed by heat, pressure, or chemicals |
| sedimentary rocks | rocks that form when sand, rocks, soil and once living things press together and harden |
| rock | a solid material made up of one or more minerals |
| sediment | sand, particles of rock, bits of soil, and reamins of once living things |
| cleavage | the tendency of a mineral to split easy along flat surfaces |
| hardness | a measure of how easily a mineral can be scratched |
| luster | the way a mineral shines or reflects light |
| mineral | a nonliving solid material that has a definite chemical makeup and is found in Earth's outermost layer |
| streak | the color of a mineral when it is ground to a powder |
| metallic mineral | a mineral that is shiny like metal |
| nonmetallic mineral | a mineral that is dull or glossy |
| geologist | a scientist who studies rocks and minerals |
| diamond | the hardest mineral |
| What causes sedimentary rocks to change into metamorphic rocks? | Heat and pressure |
| What causes molten rock to become igneous rock? | It cools and hardens. |
| What can be used to tell if a rock is metallic or nonmetallic? | Luster |
| 3 Types of Rocks | metamorphic, sedimentary & igneous |
