| Answer | Crossword Clue |
|---|---|
| SOD | Material for a permanent igloo |
| electrets | A permanently polarized piece of dielectric material, analogous to a permanent magnet |
| photograph | A picture made using a camera, in which an image is focused onto film or other light-sensitive material and then made visible and permanent by chemical treatment, or stored digitally |
| photographs | A picture made using a camera, in which an image is focused onto film or other light-sensitive material and then made visible and permanent by chemical treatment, or stored digitally |
| SNOW | Igloo material |
| ICE | Igloo material |
| SNOW | Igloo material. |
