Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 499 · 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.🌉 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
2. 2.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
3. 3.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a ruler (c) a mirror (d) turmeric powder
4. 4.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
5. 5.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
6. 6.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) two books (d) a balloon
7. 7.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) it is made of steel (d) its curved arch shape
8. 8.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) False (b) True
9. 9.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
10. 10.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a balloon (c) sheets of paper (d) a mirror
11. 11.🏗️ Which of these gets its strength from a tube shape? (a) a temple dome (b) a bridge truss (c) a round pillar (d) a roof frame
12. 12.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) a battery cell (c) two books (d) coins
15. 15.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) False (b) True
16. 16.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
17. 17.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) where coins are placed (b) coins it holds (c) the shape of the paper (d) the gap between books
18. 18.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
19. 19.True or false: a roof frame gets its strength from triangles. (a) True (b) False
20. 20.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
21. 21.True or false: a mirror is needed for the paper bridge. (a) False (b) True
22. 22.True or false: a mirror is not needed for the paper bridge. (a) True (b) False
23. 23.🏗️ Where does a bamboo pole get its strength from? (a) tubes (b) triangles (c) arches and domes
24. 24.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) less (c) more (d) not at all
25. 25.🔍 Which is the odd one out? (a) a flat tissue (b) rolled paper tubes (c) a U-shaped channel (d) a zigzag-folded sheet
26. 26.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) True (b) False
27. 27.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a U-shaped channel (c) one flat sheet (d) a torn flat sheet
28. 28.🔍 Which is the odd one out? (a) a flat tissue (b) a U-shaped channel (c) one flat sheet (d) a wet flat sheet
29. 29.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) coins (d) a mirror
30. 30.🌉 Which of these makes a weak bridge? (a) one flat sheet (b) rolled paper tubes (c) paper with folded edges (d) a U-shaped channel
31. 31.True or false: sheets of paper is not needed for the paper bridge. (a) False (b) True
32. 32.True or false: an electric tower gets its strength from arches or domes. (a) False (b) True
33. 33.⚖️ 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) where coins are placed (d) coins it holds
34. 34.🔍 Which is the odd one out? (a) a torn flat sheet (b) rolled paper tubes (c) a flat tissue (d) a wet flat sheet
35. 35.🏗️ Where does an electric tower get its strength from? (a) tubes (b) arches and domes (c) triangles
36. 36.True or false: a magnet is not needed for the paper bridge. (a) True (b) False
37. 37.True or false: two books is needed for the paper bridge. (a) False (b) True
38. 38.🏗️ Which of these gets its strength from triangles? (a) a temple dome (b) an old stone bridge (c) a bridge truss (d) a hollow bird bone
39. 39.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
40. 40.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) zero (c) more (d) the same number of

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