Boat and bell: what they have in common

1. Step 1. Boat — uses — Archimedes’ principle. A vessel stays afloat by Archimedes’ principle.
2. Step 2. Archimedes’ principle — is used in — Diving bell. Sinking with ballast.
3. Step 3. Diving bell — has part — Bell. A body open at the bottom.

Open Evothings