Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 22 · 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.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) a magnet (c) coins (d) yeast
3. 3.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) True (b) False
5. 5.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) zero (d) fewer
6. 6.🌉 Which of these makes a strong bridge? (a) a zigzag-folded sheet (b) a torn flat sheet (c) one flat sheet (d) a flat tissue
7. 7.🏗️ Where does a round pillar get its strength from? (a) triangles (b) arches and domes (c) tubes
8. 8.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
9. 9.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) on a stool edge (c) on top of a pet (d) high and wobbly
10. 10.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) paper with folded edges (c) a torn flat sheet (d) one flat sheet
11. 11.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
12. 12.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is very hot (c) it is made of steel (d) its curved arch shape
13. 13.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a wet flat sheet (d) paper with folded edges
14. 14.True or false: a round pillar gets its strength from a tube shape. (a) True (b) False
15. 15.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a flat tissue (c) a torn flat sheet (d) a U-shaped channel
16. 16.True or false: a wet flat sheet makes a weak bridge. (a) False (b) True
17. 17.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds are magnetic (c) folds add glue (d) folds make it wet
18. 18.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
19. 19.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) where coins are placed (b) the gap between books (c) the shape of the paper (d) the kind of paper
20. 20.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the heart shape (b) the star (c) the triangle (d) the square
21. 21.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) yeast (d) a ruler
22. 22.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) two books (c) a magnet (d) yeast
23. 23.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
25. 25.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) rolled paper tubes (c) a zigzag-folded sheet (d) a flat tissue
26. 26.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
27. 27.True or false: coins is needed for the paper bridge. (a) False (b) True
28. 28.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) a bamboo pole (c) an electric tower (d) an eggshell
29. 29.True or false: an eggshell gets its strength from a tube shape. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a U-shaped channel (b) a zigzag-folded sheet (c) paper with folded edges (d) a flat tissue
31. 31.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) rolled paper tubes (c) a U-shaped channel (d) a torn flat sheet
32. 32.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
33. 33.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
34. 34.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) two books (c) sheets of paper (d) coins
35. 35.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) two books (d) a balloon
36. 36.True or false: one flat sheet makes a weak bridge. (a) False (b) True
37. 37.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) coins it holds (c) where coins are placed
38. 38.True or false: a battery cell is not needed for the paper bridge. (a) True (b) False
39. 39.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
40. 40.True or false: a roof frame gets its strength from triangles. (a) True (b) False

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