Ice cellar pit and bell: what they have in common

1. Step 1. Ice cellar pit — is part of — Ice house. A sunken room.
2. Step 2. Ice house — uses — Heat transfer. Thick walls and earth slow down heat transfer.
3. Step 3. Heat transfer — is used in — Solar water heater. Heating the water.
4. Step 4. Solar water heater — has part — Window glass. The glass on top creates a greenhouse effect.
5. Step 5. Window glass — uses — Casting. The panes were cast in moulds.
6. Step 6. Casting — is used in — Bell. Casting.

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