Materials, Shapes, Surfaces

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Across
  1. 4. A flat shape with six straight sides.
  2. 8. A hard, transparent material, used to make windows, bottles and other objects.
  3. 10. An object with six square sides of equal size.
  4. 11. A chemical element that is valuable, shiny, yellow metal used to make coins and jewellery.
  5. 12. A flat shape with four 90° angles and four sides, with opposite sides of equal length.
  6. 13. A rectangular block of hard material used for building walls and houses.
Down
  1. 1. Completely flat and even, without any rough areas or holes.
  2. 2. An object with a square base and four triangular sides that form a point at the top.
  3. 3. Having a surface that is not even or regular.
  4. 5. Covered with fur.
  5. 6. A chemical element that is a heavy, silver-coloured metal, liquid at normal temperatures.
  6. 7. The soft, thick hair that grows on the bodies of sheep and some other animals.
  7. 9. Changing shape easily when pressed; not hard.