Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 850 · 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.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) more (c) fewer (d) the same number of
2. 2.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
3. 3.⚖️ 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
4. 4.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
5. 5.🏗️ Where does a hollow bird bone get its strength from? (a) tubes (b) triangles (c) arches and domes
6. 6.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) wash your hands (c) skip washing (d) lick your fingers
7. 7.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
8. 8.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
9. 9.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) paper with folded edges (c) rolled paper tubes (d) a torn flat sheet
10. 10.True or false: a wet flat sheet makes a weak bridge. (a) True (b) False
11. 11.True or false: a bamboo pole gets its strength from a tube shape. (a) False (b) True
12. 12.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
13. 13.True or false: one flat sheet makes a weak bridge. (a) False (b) True
14. 14.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) True (b) False
15. 15.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) coins (c) a magnet (d) yeast
16. 16.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) the same coins (c) only water (d) fewer coins
17. 17.⚖️ 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
18. 18.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is the one thing we change. (a) True (b) False
20. 20.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) the kind of paper (c) where coins are placed (d) the shape of the paper
21. 21.True or false: a roof frame gets its strength from a tube shape. (a) False (b) True
22. 22.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a wet flat sheet (c) rolled paper tubes (d) one flat sheet
23. 23.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a wet flat sheet (c) a U-shaped channel (d) a flat tissue
24. 24.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) two books (d) a mirror
25. 25.🧺 Do we need turmeric powder for the paper bridge? (a) not needed (b) needed
26. 26.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
27. 27.🌉 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
28. 28.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the gap between books (c) the shape of the paper
29. 29.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is very hot (c) it is made of steel (d) it is magnetic
30. 30.True or false: a mirror is not needed for the paper bridge. (a) True (b) False
31. 31.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) the shape of the paper (c) coins it holds (d) the gap between books
32. 32.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) a bridge truss (c) a roof frame (d) a round pillar
33. 33.🔮 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
34. 34.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the kind of coins (b) the shape of the paper (c) coins it holds
35. 35.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds add glue (c) folds make it stiffer (d) folds make it wet
36. 36.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
37. 37.⚖️ 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
38. 38.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) weak bridge (b) strong bridge
39. 39.True or false: a flat tissue makes a strong bridge. (a) True (b) False
40. 40.True or false: two books is not needed for the paper bridge. (a) True (b) False

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