Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 893 · 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) False (b) True
2. 2.⚖️ 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 gap between books (c) coins it holds (d) the kind of paper
3. 3.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) more (c) not at all (d) upward
4. 4.🥚 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
5. 5.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a ruler (c) a magnet (d) sheets of paper
6. 6.True or false: one flat sheet makes a weak bridge. (a) True (b) False
7. 7.🔺 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 star (d) the heart shape
8. 8.True or false: a battery cell is not needed for the paper bridge. (a) True (b) False
9. 9.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a U-shaped channel (c) a flat tissue (d) paper with folded edges
10. 10.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.True or false: a torn flat sheet makes a weak bridge. (a) False (b) True
12. 12.⚖️ 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
13. 13.🧺 Which of these is not needed for the paper bridge? (a) coins (b) turmeric powder (c) sheets of paper (d) two books
14. 14.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is the one thing we change. (a) True (b) False
15. 15.🏗️ Where does an electric tower get its strength from? (a) tubes (b) triangles (c) arches and domes
16. 16.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a bridge truss (c) a roof frame (d) a hollow bird bone
17. 17.True or false: a bamboo pole gets its strength from a tube shape. (a) False (b) True
18. 18.🧺 Which of these is not needed for the paper bridge? (a) yeast (b) two books (c) sheets of paper (d) a ruler
19. 19.True or false: a mirror is needed for the paper bridge. (a) False (b) True
20. 20.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
21. 21.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) tubes (c) arches and domes
22. 22.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) fewer coins (c) only water (d) the same coins
23. 23.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
24. 24.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
25. 25.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) a bamboo pole (c) a hollow bird bone (d) a roof frame
26. 26.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) fewer (d) zero
27. 27.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a battery cell (b) two books (c) sheets of paper (d) coins
28. 28.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is what we measure. (a) False (b) True
29. 29.🌉 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
30. 30.🏗️ Which of these gets its strength from arches or domes? (a) an electric tower (b) an old stone bridge (c) a round pillar (d) a bridge truss
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) a balloon (c) two books (d) a ruler
33. 33.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
34. 34.True or false: yeast is needed for the paper bridge. (a) True (b) False
35. 35.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) False (b) True
36. 36.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the kind of paper (b) coins it holds (c) the shape of the paper
37. 37.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) a bamboo pole (c) a roof frame (d) an eggshell
38. 38.🏗️ Which of these gets its strength from a tube shape? (a) a temple dome (b) an eggshell (c) a bamboo pole (d) a roof frame
39. 39.True or false: two books is needed for the paper bridge. (a) False (b) True
40. 40.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) weak bridge (b) strong bridge

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