science grade 7

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Across
  1. 4. structure , can be made by piling up or forming similar materials into a particular shape or design.
  2. 5. bearing, the walls that support the load of the building.
  3. 6. cost, adding extra strength, using more highly skilled workers, and using better materials all cost money.
  4. 7. things that have a definite size and shape, which serve a definite purpose or function.
  5. 8. of safety, extra strength that allows the structure to hold larger loads then it normally would need to Carry.
  6. 9. all structures are designed and built within an acceptable margin of safety.
Down
  1. 1. weight carried or supported by a structure.
  2. 2. the properties or characteristics of different materials must match the purpose of the structure.
  3. 3. walls, the walls that divide up the space inside the building.