Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 639 · 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.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it turns to card (c) it floats up (d) it gets stronger
2. 2.True or false: turmeric powder is needed for the paper bridge. (a) True (b) False
3. 3.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🔍 Which is the odd one out? (a) one flat sheet (b) a zigzag-folded sheet (c) a wet flat sheet (d) a flat tissue
6. 6.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) rub your eyes (d) wash your hands
7. 7.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) an eggshell (c) a roof frame (d) a bamboo pole
8. 8.True or false: a hollow bird bone gets its strength from a tube shape. (a) True (b) False
9. 9.⚖️ 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
10. 10.🏗️ Which of these gets its strength from triangles? (a) a bridge truss (b) an old stone bridge (c) an eggshell (d) a hollow bird bone
11. 11.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) the same number of (c) fewer (d) more
12. 12.🌉 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
13. 13.True or false: a ruler is needed for the paper bridge. (a) False (b) True
14. 14.True or false: sheets of paper is needed for the paper bridge. (a) True (b) False
15. 15.🧺 Which of these is not needed for the paper bridge? (a) two books (b) coins (c) a ruler (d) a battery cell
16. 16.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) yeast (c) coins (d) a ruler
17. 17.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a zigzag-folded sheet (c) a wet flat sheet (d) one flat sheet
18. 18.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
19. 19.🔍 Which is the odd one out? (a) one flat sheet (b) rolled paper tubes (c) a U-shaped channel (d) a zigzag-folded sheet
20. 20.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
21. 21.True or false: a magnet is not needed for the paper bridge. (a) True (b) False
22. 22.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) less (c) more (d) upward
23. 23.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the star (c) the heart shape (d) the square
24. 24.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) triangles (c) tubes
25. 25.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) a ruler (d) a magnet
26. 26.🔍 Which is the odd one out? (a) a wet flat sheet (b) a torn flat sheet (c) a U-shaped channel (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) a ruler
28. 28.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a U-shaped channel (c) a flat tissue (d) one flat sheet
29. 29.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a mirror (b) coins (c) sheets of paper (d) a ruler
30. 30.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) sheets of paper (d) a battery cell
31. 31.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) True (b) False
32. 32.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
33. 33.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) False (b) True
34. 34.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a zigzag-folded sheet (c) a torn flat sheet (d) rolled paper tubes
35. 35.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.True or false: a balloon is not needed for the paper bridge. (a) False (b) True
37. 37.True or false: a mirror is not needed for the paper bridge. (a) False (b) True
38. 38.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of paper (b) the gap between books (c) coins it holds (d) the shape of the paper
39. 39.🔍 Which is the odd one out? (a) a wet flat sheet (b) rolled paper tubes (c) one flat sheet (d) a torn flat sheet
40. 40.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) two books (c) coins (d) a balloon

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