| CATACLYSM | Sudden violent changes in the earth's surface |
| TECTONIC | Relating to structural changes in the earth is crust (8) |
| COUPDETAT | Violent change in the government of a state (4,5) |
| UPHEAVAL | Sudden violent change (8) |
| ETAT | Coup d'___ (violent change in power) |
| CHASM | Deep opening in the earth's surface (5) |
| BASIN | Depression in the earth's surface |
| CHASMS | Deep openings in the earth's surface |
| VOLCANO | Naturally occurring opening in the Earth's surface through which molten material is ejected |
| FUMAROLE | Gap in the earth's surface from which volcanic gasses such as 5/16 are released (8) |
| SEASON | Each one of the four divisions of a year defined by changes in the weather; or, the British annual calendar of social events including Royal Ascot, Wimbledon and Cowes Week (6) |
| CLIMATECHANGE | The periodic modification of Earth's climate resulting from changes in the atmosphere as well as interactions between the atmosphere and various other geologic, chemical, biological, and geographic fa |
| VIBESHIFTS | Big changes in the Zeitgeist, as suggested by the circled letters in this puzzle? |
| KINGDOM | Dong! Kim rings the changes in the realm (7) |
| TIDES | Regular changes in the levels of the sea (5) |
| HAIRTRIGGER | Subject to sudden and violent change |
| CHAMELEON | One changes in the morning, being taken in by Guevara and Trotsky (9) |
| WINDSHEAR | Sudden and severe changes in the speed and direction of atmospheric air flow - it's particularly dan |
| REGISTRAR | One holds the records for its gear changes in the car (9) |
| PAYSHEETS | These changes in the country of France, they show what's due to the workers |
