Corrugated fluting layer and rocket: what they have in common

1. Step 1. Corrugated fluting layer — is part of — Cardboard box. A corrugated layer adds stiffness.
2. Step 2. Cardboard box — is made of — Wood pulp. Corrugated board.
3. Step 3. Wood pulp — is made of — Cellulose. Wood cellulose.
4. Step 4. Cellulose — is material for — Smokeless powder. Nitrocellulose.
5. Step 5. Smokeless powder — is material for — Solid rocket motor. The propellant is smokeless powder.
6. Step 6. Solid rocket motor — evolved from — Rocket. Gunpowder rockets.

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