Electrical conduction and aerosol can: what they have in common

1. Step 1. Electrical conduction — is used in — Light switch. Contacts close the circuit.
2. Step 2. Light switch — is made of — Porcelain. The body is porcelain.
3. Step 3. Porcelain — is material for — Flush toilet. Toilet bowls are earthenware and porcelain.
4. Step 4. Flush toilet — has part — Valve. The cistern’s float valve.
5. Step 5. Valve — is part of — Aerosol can. A valve.

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