| Answer | Crossword Clue |
|---|---|
| PUMICE | Rock that may float |
| SHALE | Rock that may yield oil |
| SHALE | Rock that may hold fossils |
| NENE | Goose that may nest in lava rock |
| BOULDER | Rock that may be hard to roll |
| LOANS | Banks may float them |
| LUFFASPONGE | It may float in a tub |
| BUOY | It may float in the harbor |
