Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 622 · 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.🏗️ Where does a roof frame get its strength from? (a) triangles (b) arches and domes (c) tubes
2. 2.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) yeast (b) coins (c) a ruler (d) sheets of paper
3. 3.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
4. 4.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is the one thing we change. (a) True (b) False
5. 5.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
6. 6.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a zigzag-folded sheet (c) a torn flat sheet (d) a wet flat sheet
7. 7.🔍 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
8. 8.⚖️ 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 measure it (c) we keep it the same
9. 9.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) a flat tissue (c) paper with folded edges (d) rolled paper tubes
10. 10.🏗️ Where does a temple dome get its strength from? (a) triangles (b) arches and domes (c) tubes
11. 11.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) zero (c) more (d) fewer
12. 12.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is made of steel (c) its curved arch shape (d) it is very hot
13. 13.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) a flat tissue (d) rolled paper tubes
14. 14.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.True or false: a bridge truss gets its strength from a tube shape. (a) False (b) True
16. 16.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) arches and domes (c) tubes
17. 17.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) the shape of the paper (c) where coins are placed (d) the kind of paper
18. 18.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
19. 19.True or false: a flat tissue makes a strong bridge. (a) False (b) True
20. 20.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) the same coins (c) more coins (d) fewer coins
21. 21.True or false: paper with folded edges makes a strong bridge. (a) True (b) False
22. 22.🏗️ Where does a round pillar get its strength from? (a) triangles (b) tubes (c) arches and domes
23. 23.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) rub your eyes (c) lick your fingers (d) wash your hands
24. 24.True or false: a temple dome gets its strength from triangles. (a) False (b) True
25. 25.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds are magnetic (c) folds add glue (d) folds make it stiffer
26. 26.🔍 Which is the odd one out? (a) a U-shaped channel (b) a wet flat sheet (c) one flat sheet (d) a flat tissue
27. 27.🧺 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
28. 28.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) coins (c) a mirror (d) two books
31. 31.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) where coins are placed (c) the kind of coins (d) the shape of the paper
32. 32.🧺 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
33. 33.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) paper with folded edges (c) a flat tissue (d) a torn flat sheet
34. 34.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it gets stronger (c) it sags and falls (d) it floats up
35. 35.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
36. 36.True or false: turmeric powder is not needed for the paper bridge. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a U-shaped channel (b) one flat sheet (c) a zigzag-folded sheet (d) paper with folded edges
38. 38.⚖️ 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) where coins are placed
39. 39.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
40. 40.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed

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