How to Use "cataclysm" with Example Sentences

1. It 's a cataclysm for all mankind .

2. A sudden violent change in the earth 's surface ; a cataclysm .

3. Cataclysm testing will start in april .

4. Old aristocratic institutions destroyed by the revolutionary cataclysm .

5. So much better for all the rumors about a coming cataclysm to be related to a mere dirty snowball , a common comet !