Camshaft and lead–acid battery: what they have in common

1. Step 1. Camshaft — is part of — Internal combustion engine. The camshaft opens the engine’s valves.
2. Step 2. Internal combustion engine — has part — Starter motor. A starter.
3. Step 3. Starter motor — uses — Car battery. Power.
4. Step 4. Car battery — is a kind of — Lead–acid battery. Lead–acid.

Open Evothings