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Science 7
 

Science 7

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  • Brick is a solid because it is hard and has no space in the center
  • These houses where made for shelter

Science 7 Science 7 Presentation Transcript

  • Science 7
  • Solid Structure • Solid structures are used for being strong and lasting a long time. Brick is a solid because it is hard and has no space in the center
  • Frame Structure • Frame structures are structures that are joined together and make a strong structure .they are used for houses because they are easy to build . These houses where made for shelter
  • Shell structures • Shell structures are made for protecting every thing inside they have a solid out side and a weak center. • An example is an egg.
  • Truss Bridge • Truss bridges are for letting people cross something safely. Truss bridges are made of a lot of triangles.
  • Arch Bridge • Arch bridges are arches that people can cross on top and can hold lots of weight .
  • Suspension Bridge • Suspension bridges are bridges that are secured at both ends by cables or ropes
  • Beam Bridge • Beam bridges are beams that are supported on both ends.
  • Eiffel Tower • The Eiffel tower is a frame structure that is mainly used for tourist attraction .
  • Cargo Ships • Cargo ships are ships that carry a lot of cargo safely they are shell structures because they have very hard out sides.