| A | B |
|---|
| grain | small particle |
| size | how big it is. |
| well rounded | no edges. Edges and corners have been worn off totally by abrasion. |
| sand | tiny grains of broken down rocks |
| rounded | Edges are smoothed. Almost no edges |
| subangular | has some sharp edges |
| subrounded | Many edges have been worn off. |
| well sorted | If sand has the same size grains, it's___. |
| moderately well sorted | If sand has a little different size grains, it's __. |
| poorly sorted | If sand has different size grains, it's --. |
| very poorly sorted | If sand's grains have a big difference in size, it's __. |
| very well sorted | If sand has identical size grains, it's ___ . |
| composition | What's inside a thing; What makes up a thing |
| boulder | The rocks' diameter is above 256 mm. |
| cobble | The rocks' diameter is 64-256 mm. |
| pebble | The stone's diameter is 4-64 mm. |
| sorting | how the sand is separated by size |
| gravel | the stone's diameter is 2-4 mm. |
| coarse sand | The sand's diameter is 0.5-1 mm. |
| medium sand | The sand's diameter is 0.25-0.5 mm. |
| fine sand | the sand's diameter is 0.125-0.25 mm. |
| silt | It's diameter is 0.004-0.062 mm. |
| clay | It's diameter is less than 0.004 mm (smallest). |
| angular | has sharp edges |
