E. wood movement

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Across
  1. 4. in the air
  2. 5. only two corners touch the ground
  3. 6. caused by t/r ratio
  4. 9. moves along its face
  5. 10. following its natural curves
  6. 11. measurement of expansion and shrinkage
  7. 12. balance
Down
  1. 1. perpendicular to the rings
  2. 2. evaporates or absorbs
  3. 3. maximum bound water
  4. 7. grain that is parallel to the growth rings
  5. 8. no movement
  6. 9. trapped
  7. 13. moves along its edge