Life support backpack and freezer: what they have in common

1. Step 1. Life support backpack — is part of — Spacesuit. A backpack with oxygen, air purification and temperature control.
2. Step 2. Spacesuit — is used in — Vostok 1. The SK-1 spacesuit.
3. Step 3. Vostok 1 — has part — Heat shield. A spherical descent capsule with a heat shield.
4. Step 4. Heat shield — uses — Heat transfer. It protects by carrying heat away with a vaporizing layer.
5. Step 5. Heat transfer — is used in — Thermal insulation. Reducing heat transfer.
6. Step 6. Thermal insulation — is part of — Freezer. Polyurethane foam in the walls.

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