| A | B |
| Talc | One of the softest minerals |
| Gemstone | The properties that make a dimond rare and beautiful. |
| Large | Crystals that form in slowly cooling magma |
| Granite | Mica, Hornblende, feldspar, quartz. |
| Extrusive Igneous | Lava that cools at Earth's surface. |
| Intrusive Igneous | Magma that cools deep inside earth |
| Granitic Igneous | Light colored rocks that are lower in density than basaltic rocks |
| Longitude | To determan distance east and west. |
| Contour | line that show points of equal elevation. |
| Soil | A mixture of weathered rock and decayed organic matter. |
| A Horizon | Layer of soil that contains organisms and organic matter. |
| Mechanical Weathering | Breaks apart rock without changing their chemical compostion. |
| Chemical Weathering | Occurs when substances react with the minerals in rocks. |