| WEATHERING | The mechanical and chemical breakdown of rocks by the action of rain, snow, cold etc (10) |
| HYDRAULICS | What is the study of the mechanical and flow properties of fluids? (10) |
| REEF | Chain of rocks by the sea's edge |
| CLIFF | A high edge of rock by the sea (5) |
| HYDROLYSIS | The chemical breakdown of a compound due to reaction with water (10) |
| TEKTITE | Small dark glassy object thought to have been formed from terrestrial rocks by the heat of impacting meteorites (7) |
| ROTOR | Something mechanical dumping old pile of rocks by river |
| STORMS | What are heavy falls of rain, snow, hail, etc (6) |
| FAIR | With no prospect of rain, snow or hail |
| DIGESTION | Chemical breakdown of food in an organism (9) |
| THEELEMENTS | Rain, wind, cold, etc. |
| COPACETIC | Catch a cold etc - catching one is great |
| TREMBLE | To shake as from fear, cold, etc (7) |
| COMETOTHINKOFIT | Celestial body, if not OK, hit rocks by the way (4,2,5,2,2) |
| PNEUMATICS | The study of the mechanical properties of air and other gases (10) |
| DIAGENESIS | In geology, the collective physical and chemical changes that sediment undergoes as it turns into rock (10) |
| LIONSSHARE | Quantity of action got in the mechanicals' play? Yes and no |
| CONFLUENCE | Meeting to study viral infection with nurse and chemical engineer (10) |
| FUMIGATION | Eradication of pests with smoke and chemicals |
| PROMETHEUS | He was chained to a rock by Zeust giving fire to mankind (10) |
