Paper Bridge STEM Challenge Worksheet

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

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