| A | B |
|---|
| geology | study of the earth |
| rock | hard solid material on the earth |
| igneous rock | forms from cooled magma or lava |
| magma | hot, melted rock beneath the earth's surface |
| lava | magma that is outside of the volcano |
| crust | the ground we walk on |
| sedimentary rock | forms from layers of weathered rock |
| metamorphic rock | formed from igneous or metamorphic rock from heat & pressure |
| minerals | solid materials in nature that were never alive |
| physical weathering | the process of breaking rocks into smaller pieces |
| chemical weathering | breaks down through chemical changes |
| acid rain | when rain mixes with chemicals in the air |
