Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 415 · 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 ruler is needed for the paper bridge. (a) False (b) True
2. 2.🏗️ Which of these gets its strength from triangles? (a) a bamboo pole (b) a temple dome (c) an old stone bridge (d) a bridge truss
3. 3.True or false: a wet flat sheet makes a weak bridge. (a) False (b) True
4. 4.True or false: a hollow bird bone gets its strength from triangles. (a) False (b) True
5. 5.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
6. 6.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) triangles (c) arches and domes
7. 7.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) zero (c) fewer (d) more
8. 8.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) the same coins (c) only water (d) fewer coins
9. 9.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) a roof frame (c) a hollow bird bone (d) an eggshell
10. 10.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) wash your hands (c) skip washing (d) lick your fingers
11. 11.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a bamboo pole (c) an electric tower (d) an old stone bridge
12. 12.True or false: a mirror is not needed for the paper bridge. (a) True (b) False
13. 13.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
14. 14.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it stiffer (d) folds make it wet
15. 15.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is very hot (c) its curved arch shape (d) it is magnetic
16. 16.True or false: one flat sheet makes a weak bridge. (a) False (b) True
17. 17.True or false: a temple dome gets its strength from arches or domes. (a) True (b) False
18. 18.🌉 Which of these makes a weak bridge? (a) a torn flat sheet (b) paper with folded edges (c) a zigzag-folded sheet (d) rolled paper tubes
19. 19.True or false: a hollow bird bone gets its strength from a tube shape. (a) True (b) False
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.True or false: two books is not needed for the paper bridge. (a) True (b) False
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.🧺 Do we need turmeric powder for the paper bridge? (a) not needed (b) needed
25. 25.🔍 Which is the odd one out? (a) a flat tissue (b) one flat sheet (c) a torn flat sheet (d) a U-shaped channel
26. 26.True or false: one flat sheet makes a strong bridge. (a) False (b) True
27. 27.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) a flat tissue (d) a zigzag-folded sheet
28. 28.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) sheets of paper (c) a mirror (d) a magnet
29. 29.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) coins (d) turmeric powder
32. 32.True or false: a flat tissue makes a weak bridge. (a) True (b) False
33. 33.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) two books (c) a magnet (d) a battery cell
34. 34.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
35. 35.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
36. 36.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) not at all (c) less (d) more
37. 37.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the shape of the paper (b) the kind of paper (c) coins it holds (d) the kind of coins
38. 38.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
39. 39.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
40. 40.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the heart shape (c) the triangle (d) the star

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