Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 503 · 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.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
3. 3.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
4. 4.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) more coins (c) only water (d) fewer coins
5. 5.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) yeast (c) a ruler (d) two books
6. 6.🔍 Which is the odd one out? (a) a wet flat sheet (b) a flat tissue (c) a torn flat sheet (d) paper with folded edges
7. 7.⚖️ 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
8. 8.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
9. 9.⚖️ 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
10. 10.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
11. 11.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a wet flat sheet (c) one flat sheet (d) a U-shaped channel
12. 12.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) an electric tower (c) a hollow bird bone (d) a bamboo pole
13. 13.🥚 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 magnetic (d) it is made of steel
14. 14.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
15. 15.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) the same number of (c) more (d) fewer
16. 16.🧺 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
17. 17.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a magnet (c) a ruler (d) a mirror
18. 18.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the heart shape (c) the star (d) the square
19. 19.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) a balloon (c) turmeric powder (d) a magnet
20. 20.🔍 Which is the odd one out? (a) rolled paper tubes (b) a flat tissue (c) a wet flat sheet (d) one flat sheet
21. 21.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) upward (c) more (d) less
22. 22.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
23. 23.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) an eggshell (c) a round pillar (d) a roof frame
24. 24.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
25. 25.True or false: a flat tissue makes a weak bridge. (a) False (b) True
26. 26.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a temple dome (c) a bamboo pole (d) a bridge truss
27. 27.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) a temple dome (c) an eggshell (d) a hollow bird bone
28. 28.True or false: two books is not needed for the paper bridge. (a) True (b) False
29. 29.True or false: a U-shaped channel makes a weak bridge. (a) False (b) True
30. 30.True or false: a balloon is needed for the paper bridge. (a) False (b) True
31. 31.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it wet (c) folds add glue (d) folds make it stiffer
32. 32.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
33. 33.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) skip washing (c) rub your eyes (d) lick your fingers
34. 34.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) tubes (c) triangles
39. 39.True or false: an old stone bridge gets its strength from triangles. (a) True (b) False
40. 40.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) one flat sheet (c) a flat tissue (d) rolled paper tubes

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