Bra shoulder straps and oil lamp: what they have in common

1. Step 1. Bra shoulder straps — is part of — Bra. Adjustable straps.
2. Step 2. Bra — is made of — Silk. Mary Phelps Jacob’s bra was made of silk handkerchiefs.
3. Step 3. Silk — is material for — Hot air balloon. The Montgolfier balloon was fabric lined with paper.
4. Step 4. Hot air balloon — uses — Combustion. A fire heated the air inside.
5. Step 5. Combustion — is used in — Oil lamp. Burning oil gives the light.

Open Evothings