Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 121 · 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 wet flat sheet makes a weak bridge. (a) False (b) True
2. 2.True or false: a U-shaped channel makes a strong bridge. (a) True (b) False
3. 3.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) an old stone bridge (c) a bridge truss (d) a hollow bird bone
4. 4.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a flat tissue (c) one flat sheet (d) paper with folded edges
5. 5.🛟 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
6. 6.True or false: a magnet is needed for the paper bridge. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) rolled paper tubes (b) a U-shaped channel (c) one flat sheet (d) a zigzag-folded sheet
8. 8.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) coins (c) a ruler (d) sheets of paper
9. 9.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it turns to card (c) it gets stronger (d) it floats up
10. 10.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the star (b) the heart shape (c) the triangle (d) the square
11. 11.True or false: two books is needed for the paper bridge. (a) True (b) False
12. 12.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) two books (c) sheets of paper (d) yeast
14. 14.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a magnet (c) a ruler (d) sheets of paper
15. 15.True or false: two books is not needed for the paper bridge. (a) False (b) True
16. 16.True or false: a bamboo pole gets its strength from arches or domes. (a) True (b) False
17. 17.🔮 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
18. 18.True or false: rolled paper tubes makes a strong bridge. (a) True (b) False
19. 19.⚖️ 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
20. 20.True or false: an eggshell gets its strength from triangles. (a) True (b) False
21. 21.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) paper with folded edges (c) a torn flat sheet (d) a zigzag-folded sheet
22. 22.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
23. 23.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
24. 24.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) zero (d) more
25. 25.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
26. 26.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) True (b) False
27. 27.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) where coins are placed (c) coins it holds (d) the kind of paper
28. 28.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) coins (d) sheets of paper
32. 32.⚖️ 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
33. 33.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) a wet flat sheet (c) paper with folded edges (d) rolled paper tubes
35. 35.True or false: a U-shaped channel makes a weak bridge. (a) False (b) True
36. 36.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) low and steady (c) high and wobbly (d) on a stool edge
37. 37.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds are magnetic (c) folds make it wet (d) folds add glue
38. 38.🧺 Which of these is not needed for the paper bridge? (a) a magnet (b) a ruler (c) two books (d) sheets of paper
39. 39.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
40. 40.True or false: a bridge truss gets its strength from triangles. (a) True (b) False

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