Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 95 · 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.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it sags and falls (c) it gets stronger (d) it turns to card
2. 2.⚖️ 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
3. 3.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it stiffer (c) folds make it wet (d) folds are magnetic
4. 4.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
5. 5.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) triangles (c) arches and domes
6. 6.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
7. 7.True or false: coins is not needed for the paper bridge. (a) True (b) False
8. 8.True or false: turmeric powder is needed for the paper bridge. (a) True (b) False
9. 9.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) True (b) False
10. 10.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
11. 11.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) two books (c) sheets of paper (d) a magnet
12. 12.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
13. 13.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) not at all (c) more (d) upward
14. 14.True or false: one flat sheet makes a strong bridge. (a) False (b) True
15. 15.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) more coins (c) only water (d) the same coins
16. 16.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) an electric tower (c) a bridge truss (d) a bamboo pole
17. 17.True or false: a balloon is needed for the paper bridge. (a) True (b) False
18. 18.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) a mirror (d) a ruler
19. 19.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the heart shape (c) the square (d) the star
20. 20.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) fewer (c) the same number of (d) zero
21. 21.True or false: a battery cell is needed for the paper bridge. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) rolled paper tubes (b) a torn flat sheet (c) paper with folded edges (d) a zigzag-folded sheet
23. 23.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
24. 24.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a torn flat sheet (c) paper with folded edges (d) a flat tissue
25. 25.True or false: an electric tower gets its strength from arches or domes. (a) False (b) True
26. 26.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🏗️ Which of these gets its strength from arches or domes? (a) an eggshell (b) a roof frame (c) a hollow bird bone (d) a round pillar
28. 28.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) False (b) True
29. 29.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) sheets of paper (d) yeast
30. 30.⚖️ 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 shape of the paper (c) the kind of paper (d) the gap between books
31. 31.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) coins it holds (c) the kind of coins
32. 32.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
33. 33.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) low and steady (c) on top of a pet (d) on a stool edge
34. 34.🌉 Which of these makes a weak bridge? (a) a flat tissue (b) a zigzag-folded sheet (c) a U-shaped channel (d) paper with folded edges
35. 35.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
38. 38.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the paper bridge? (a) a ruler (b) a mirror (c) turmeric powder (d) a magnet
40. 40.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed

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