Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 106 · 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.True or false: a flat tissue makes a weak bridge. (a) True (b) False
2. 2.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) coins (d) a magnet
3. 3.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.True or false: an electric tower gets its strength from triangles. (a) False (b) True
5. 5.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) fewer coins (d) the same coins
6. 6.🏗️ Where does an electric tower get its strength from? (a) triangles (b) tubes (c) arches and domes
7. 7.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) more (c) not at all (d) less
8. 8.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the kind of paper (c) the shape of the paper
9. 9.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) low and steady (c) high and wobbly (d) on top of a pet
11. 11.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
12. 12.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) zero (d) fewer
13. 13.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
14. 14.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the star (c) the square (d) the heart shape
15. 15.True or false: an old stone bridge gets its strength from arches or domes. (a) False (b) True
16. 16.True or false: a round pillar gets its strength from a tube shape. (a) True (b) False
17. 17.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
18. 18.True or false: a hollow bird bone gets its strength from arches or domes. (a) False (b) True
19. 19.True or false: an old stone bridge gets its strength from triangles. (a) True (b) False
20. 20.🏗️ Where does a temple dome get its strength from? (a) triangles (b) tubes (c) arches and domes
21. 21.🏗️ Which of these gets its strength from arches or domes? (a) a hollow bird bone (b) a bridge truss (c) an old stone bridge (d) an electric tower
22. 22.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of coins (b) the kind of paper (c) the shape of the paper (d) coins it holds
23. 23.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a wet flat sheet (c) a zigzag-folded sheet (d) a U-shaped channel
24. 24.True or false: a mirror is not needed for the paper bridge. (a) True (b) False
25. 25.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
26. 26.True or false: turmeric powder is not needed for the paper bridge. (a) False (b) True
27. 27.True or false: an electric tower gets its strength from arches or domes. (a) True (b) False
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) sheets of paper (c) two books (d) coins
29. 29.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) False (b) True
30. 30.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
33. 33.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
34. 34.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) paper with folded edges (c) rolled paper tubes (d) a flat tissue
35. 35.True or false: a magnet is not needed for the paper bridge. (a) False (b) True
36. 36.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
37. 37.True or false: a ruler is needed for the paper bridge. (a) False (b) True
38. 38.🏗️ Which of these gets its strength from triangles? (a) a bridge truss (b) a round pillar (c) a bamboo pole (d) a hollow bird bone
39. 39.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the gap between books (b) coins it holds (c) the shape of the paper
40. 40.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds make it stiffer (c) folds are magnetic (d) folds add glue

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