Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 394 · 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: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) fewer coins (c) only water (d) more coins
2. 2.🌉 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 wet (d) folds make it stiffer
3. 3.🏗️ Where does an eggshell get its strength from? (a) arches and domes (b) triangles (c) tubes
4. 4.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the heart shape (b) the star (c) the square (d) the triangle
5. 5.🏗️ Where does a hollow bird bone get its strength from? (a) tubes (b) arches and domes (c) triangles
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the paper bridge? (a) two books (b) coins (c) sheets of paper (d) a mirror
9. 9.🧺 Which of these is not needed for the paper bridge? (a) coins (b) two books (c) a battery cell (d) a ruler
10. 10.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
11. 11.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
12. 12.🏗️ Where does a temple dome get its strength from? (a) tubes (b) arches and domes (c) triangles
13. 13.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
14. 14.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🏗️ Where does a round pillar get its strength from? (a) tubes (b) triangles (c) arches and domes
16. 16.True or false: a roof frame gets its strength from triangles. (a) False (b) True
17. 17.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
18. 18.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) zero (c) the same number of (d) fewer
19. 19.🏗️ Which of these gets its strength from a tube shape? (a) a bamboo pole (b) an electric tower (c) a roof frame (d) a bridge truss
20. 20.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
21. 21.True or false: a temple dome gets its strength from triangles. (a) True (b) False
22. 22.⚖️ 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) the kind of coins (c) where coins are placed (d) the gap between books
23. 23.True or false: an electric tower gets its strength from arches or domes. (a) True (b) False
24. 24.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
25. 25.⚖️ 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
26. 26.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a torn flat sheet (c) a U-shaped channel (d) paper with folded edges
27. 27.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) False (b) True
28. 28.True or false: coins is needed for the paper bridge. (a) False (b) True
29. 29.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) more (c) not at all (d) less
30. 30.🔍 Which is the odd one out? (a) a torn flat sheet (b) one flat sheet (c) a wet flat sheet (d) a zigzag-folded sheet
31. 31.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a roof frame (c) a round pillar (d) a hollow bird bone
32. 32.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) where coins are placed (c) the shape of the paper (d) coins it holds
33. 33.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.True or false: a balloon is needed for the paper bridge. (a) False (b) True
36. 36.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a wet flat sheet (c) a flat tissue (d) a zigzag-folded sheet
37. 37.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) yeast (d) coins
38. 38.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
39. 39.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a wet flat sheet (c) paper with folded edges (d) a U-shaped channel
40. 40.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge

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