Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 901 · 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.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the kind of coins (c) coins it holds
2. 2.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) paper with folded edges (d) a torn flat sheet
3. 3.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) the same coins (c) only water (d) fewer coins
4. 4.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a ruler (c) sheets of paper (d) a balloon
5. 5.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the shape of the paper (b) the kind of paper (c) coins it holds (d) the gap between books
6. 6.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the triangle (c) the star (d) the heart shape
7. 7.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the shape of the paper (c) the kind of paper
8. 8.🏗️ Where does an eggshell get its strength from? (a) tubes (b) arches and domes (c) triangles
9. 9.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) a temple dome (c) a bridge truss (d) a round pillar
10. 10.🧺 Which of these is needed for the paper bridge? (a) coins (b) a battery cell (c) a balloon (d) a magnet
11. 11.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) paper with folded edges (d) a torn flat sheet
13. 13.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a flat tissue (c) a wet flat sheet (d) a zigzag-folded sheet
14. 14.🏗️ Which of these gets its strength from triangles? (a) a temple dome (b) a round pillar (c) a hollow bird bone (d) a roof frame
15. 15.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🔍 Which is the odd one out? (a) a torn flat sheet (b) a flat tissue (c) one flat sheet (d) rolled paper tubes
17. 17.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
18. 18.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) high and wobbly (c) on top of a pet (d) on a stool edge
19. 19.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) paper with folded edges (c) rolled paper tubes (d) a wet flat sheet
20. 20.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a torn flat sheet (c) one flat sheet (d) paper with folded edges
21. 21.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
22. 22.🔍 Which is the odd one out? (a) rolled paper tubes (b) one flat sheet (c) a U-shaped channel (d) paper with folded edges
23. 23.True or false: a flat tissue makes a weak bridge. (a) False (b) True
24. 24.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) upward (c) more (d) less
25. 25.⚖️ 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 change it (c) we measure it
26. 26.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) a bamboo pole (c) a hollow bird bone (d) an eggshell
27. 27.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
28. 28.True or false: an old stone bridge gets its strength from triangles. (a) True (b) False
29. 29.🏗️ Where does a roof frame get its strength from? (a) triangles (b) tubes (c) arches and domes
30. 30.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is magnetic (c) it is made of steel (d) it is very hot
31. 31.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) one flat sheet (d) a zigzag-folded sheet
32. 32.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) coins (d) a magnet
33. 33.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) triangles (c) tubes
34. 34.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) False (b) True
35. 35.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) a ruler (c) two books (d) sheets of paper
36. 36.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
37. 37.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
38. 38.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
39. 39.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it stiffer (d) folds make it wet
40. 40.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we measure it (b) we change it (c) we keep it the same

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