Strong and Stable Structures

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Across
  1. 4. what something is made from
  2. 5. made by nature, not by people
  3. 6. able to stay standing and not fall over easily
  4. 11. able to hold a lot of weight without breaking
  5. 12. something that has been built or put together
Down
  1. 1. made by people, not found in nature
  2. 2. the force that pulls things down to the ground
  3. 3. the strongest shape
  4. 7. when weight is spread out evenly so something doesn’t fall
  5. 8. the bottom part that supports a structure
  6. 9. the reason something is made or used
  7. 10. a structure built to cross over water or land