Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 519 · 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.🔮 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
2. 2.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
3. 3.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) skip washing (c) lick your fingers (d) rub your eyes
4. 4.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) two books (c) a ruler (d) a mirror
5. 5.True or false: a hollow bird bone gets its strength from arches or domes. (a) True (b) False
6. 6.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) yeast (c) coins (d) two books
7. 7.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) yeast (c) a mirror (d) a ruler
8. 8.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) where coins are placed (c) the shape of the paper
9. 9.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) False (b) True
10. 10.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
11. 11.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) a bamboo pole (c) an old stone bridge (d) an electric tower
13. 13.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) fewer coins (c) more coins (d) only water
14. 14.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
16. 16.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a wet flat sheet (c) rolled paper tubes (d) paper with folded edges
17. 17.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a torn flat sheet (c) a flat tissue (d) a zigzag-folded sheet
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) sheets of paper (d) a mirror
20. 20.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) where coins are placed (b) coins it holds (c) the shape of the paper (d) the gap between books
21. 21.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) False (b) True
22. 22.🏗️ Where does an eggshell get its strength from? (a) triangles (b) tubes (c) arches and domes
23. 23.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) more (c) zero (d) the same number of
24. 24.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
25. 25.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the gap between books (b) coins it holds (c) the shape of the paper
26. 26.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a roof frame (c) a bamboo pole (d) a temple dome
27. 27.True or false: a bamboo pole gets its strength from arches or domes. (a) False (b) True
28. 28.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) paper with folded edges (d) one flat sheet
29. 29.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) tubes (c) triangles
30. 30.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) a ruler (c) coins (d) a magnet
31. 31.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) triangles (c) arches and domes
32. 32.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
35. 35.True or false: a battery cell is not needed for the paper bridge. (a) True (b) False
36. 36.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds make it stiffer (d) folds are magnetic
37. 37.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
38. 38.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
39. 39.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
40. 40.🔍 Which is the odd one out? (a) rolled paper tubes (b) a torn flat sheet (c) one flat sheet (d) a flat tissue

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