Paper Bridge STEM Challenge Worksheet

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

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