| A | B |
|---|
| regolith | loose rick and soil material covering the surface of the earth |
| bedrock | the layer of solid rock under regolith |
| rocks | are made of mixturesof minerals they are not chmically combined and can be easily separated |
| grains | small pieces of minerals |
| mineral | a naturally occurring solid, inorganic, substance with known physical and chemical properties |
| physical properties | color, luster, streak |
| luster | the way it shines |
| metallic | shiny |
| nonmetallic | dull |
| streak | color of the mineral's powder when the mineral is rubbed on an unglazed tile |
| hardness | how easy it gets scratched |
| Moh's Scale of Hardness | hardness scale that starts with the softest ( talc) to the hardest (diamond) |
| specific gravity | the ration of the density of the mineral to the density of water |
| cleavage | tendenacy of mineral to split along smooth, flat surfaces, forming regular shapes |
| fracture | the tendency of the mineral to beak along rough, uneven surfaces, forming an irregular shape |
| crystal shape | the atoms go together in a definite pattern forming a particular shape |
| density | mass/volume |
| acid test | useful in mineral identification, hydrochloric acid is placed on the mineral calcite, it bubbles |
| physical properties | are due to the arrangement of the mineral's atoms |
