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Bridges: How Engineers Cross the Impossible

SheelonPhysicsScienceEnglishGrades 6-8Published Aug 6, 2026

Beam, arch, truss, and suspension: four ideas that carry the world's traffic over rivers, gorges, and bays. Learn which forces pull on every cable and why triangles never wobble.

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Questions in this quiz

All 12 shown. Answers not revealed.

  1. The simplest bridge of all, a stiff deck resting on a support at each end, is called a...

    Multiple Choice · 20s

    ASuspension bridge
    BDrawbridge
    CBeam bridge
    DAqueduct

  2. Roman builders crossed rivers with stone bridges based on which strong shape?

    Multiple Choice · 20s

    AThe cube
    BThe arch
    CThe spiral
    DThe pyramid

  3. In a suspension bridge, what holds the road deck up?

    Multiple Choice · 20s

    AColumns every few meters
    BAir pressure from below
    CFloating pontoons
    DCables hung between tall towers
  4. The main cables of a suspension bridge are constantly being stretched. Engineers call that force...Multiple Choice · 20s
  5. Truss bridges are built from triangles because a triangle keeps its shape under load.True / False · 20s
  6. Why is the Golden Gate Bridge in San Francisco painted a reddish-orange color?Multiple Choice · 20s
  7. London's Tower Bridge does something most bridges cannot. What?Multiple Choice · 20s
  8. Every stone bridge built by the ancient Romans collapsed centuries ago.True / False · 20s
  9. The Millau Viaduct, a road bridge taller than the Eiffel Tower, soars over a valley in which country?Multiple Choice · 20s
  10. For the very longest crossings over deep water, which bridge type holds the record spans?Multiple Choice · 20s
  11. Which curved shape lets a stone bridge carry heavy loads without bending? (one word)Type Answer · 30s
  12. A bridge whose deck hangs from long steel cables strung over towers is called a ... bridge. (one word)Type Answer · 30s

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