GT/Holiday Crossword

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Across
  1. 2. Protection against heat loss in both systems and structures
  2. 4. Astronomical event marking the shortest day of the year
  3. 6. Old term for the Christmas season
  4. 8. Acceptable variation engineers must design within
  5. 9. The fifth reindeer
  6. 10. Thin layer of ice formed in cold air
  7. 11. Symbol of endurance through the winter season
Down
  1. 1. Traditional holiday song
  2. 3. To verify a design meets operating requirements
  3. 5. Engineered material made from multiple constituents for performance
  4. 7. Core function of Greene Tweed products