Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 38 · 40 questions

What you do (Shape makes strength): 1. Place two books 15 cm apart, low and steady. 2. Lay a flat sheet across and add coins one by one in the middle until it falls. 3. Fold the same kind of sheet into a zigzag and test it the same way. 4. Record the coins each shape holds, then wash your hands.

1. 1.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) two books (c) sheets of paper (d) a battery cell
2. 2.True or false: a bamboo pole gets its strength from a tube shape. (a) False (b) True
3. 3.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) less (c) not at all (d) more
4. 4.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a roof frame (c) an electric tower (d) a temple dome
5. 5.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.True or false: an electric tower gets its strength from a tube shape. (a) True (b) False
7. 7.🏗️ Where does a temple dome get its strength from? (a) tubes (b) triangles (c) arches and domes
8. 8.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) yeast (c) a battery cell (d) a magnet
9. 9.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
10. 10.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) False (b) True
11. 11.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) yeast (c) coins (d) a ruler
13. 13.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
15. 15.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is made of steel (c) it is magnetic (d) its curved arch shape
16. 16.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the square (c) the heart shape (d) the star
17. 17.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) turmeric powder (c) coins (d) a balloon
18. 18.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is the one thing we change. (a) False (b) True
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) coins (d) a mirror
20. 20.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a torn flat sheet (c) one flat sheet (d) a U-shaped channel
21. 21.True or false: an old stone bridge gets its strength from a tube shape. (a) True (b) False
22. 22.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
23. 23.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
24. 24.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) the shape of the paper (c) where coins are placed (d) coins it holds
25. 25.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) zero (c) the same number of (d) more
26. 26.True or false: a ruler is needed for the paper bridge. (a) False (b) True
27. 27.🏗️ Where does a bridge truss get its strength from? (a) triangles (b) arches and domes (c) tubes
28. 28.True or false: coins is not needed for the paper bridge. (a) False (b) True
29. 29.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🌉 Which of these makes a strong bridge? (a) rolled paper tubes (b) one flat sheet (c) a wet flat sheet (d) a flat tissue
31. 31.🏗️ Where does a hollow bird bone get its strength from? (a) arches and domes (b) tubes (c) triangles
32. 32.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
33. 33.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) triangles (c) tubes
34. 34.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) an electric tower (c) an old stone bridge (d) a hollow bird bone
35. 35.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds are magnetic (c) folds add glue (d) folds make it stiffer
36. 36.🏗️ Which of these gets its strength from triangles? (a) a bridge truss (b) a hollow bird bone (c) an old stone bridge (d) a bamboo pole
37. 37.🌉 Which of these makes a weak bridge? (a) one flat sheet (b) a U-shaped channel (c) rolled paper tubes (d) paper with folded edges
38. 38.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
39. 39.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
40. 40.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed

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