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WorksheetsBridges: Why Triangles?
Total questions: 20
Worksheet time: 20mins
Why are triangles used in bridge building?
What happens when a force pushes on a triangle?
The sides share the force equally
What happens when a force pushes on a square shape?
It stays the same
It turns into a triangle
It bends or twists
It becomes stronger
Which shape keeps its form under heavy loads?
Why do engineers not use squares alone in bridges?
Squares can bend and lose shape
How does a triangle spread the load on a bridge?
What part of a bridge often uses triangles?
What is one weakness of a square in bridge design?
It changes shape under pressure
When squares are used in bridge frames, what must engineers add to make them stronger?
A circle around it
Another square
Super Glue
A triangle brace inside the square
In simple terms, why is a triangle stronger than a square?
Because it has four sides
Because it is smaller
Because its shape cannot change under pressure
Because it has four sides
(a) are the (b) and most (c) used in (d)
When (a) or weight (b) on a (c) , the (d) the (e) and do not change an shape.
Other shapes, (a) , can (b) easily. A (c) keeps its shape because the (d) each other, giving the (e)
(a) use (b) in trusses (c) — they help the bridge (d) and safe (e)
Triangles are (a) (stro...) and more stable than squares when building bridges.
When a heavy load is put on a triangle, the force (a) (spre... eve...) through all three sides, keeping the shape strong.
A square changes shape and (a) (ben... eas...) when a load is added.
Why are triangles better than squares for supporting bridges? (3 marks)
(a) use (b) instead of (c) in bridges because triangles (d) even when force is added.
Engineers use (a) (tria....) instead of squares in bridges because triangles keep their shape even when force is added.
