Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 253 · 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.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) a bridge truss (c) a round pillar (d) a bamboo pole
2. 2.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
3. 3.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) less (c) upward (d) more
4. 4.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
5. 5.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it wet (c) folds are magnetic (d) folds make it stiffer
6. 6.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
7. 7.True or false: paper with folded edges makes a strong bridge. (a) True (b) False
8. 8.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the star (c) the heart shape (d) the triangle
9. 9.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) False (b) True
10. 10.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) the shape of the paper (c) the kind of coins (d) where coins are placed
11. 11.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
12. 12.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it floats up (c) it sags and falls (d) it turns to card
13. 13.True or false: two books is needed for the paper bridge. (a) True (b) False
14. 14.⚖️ 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
15. 15.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
16. 16.⚖️ 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
17. 17.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
18. 18.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) False (b) True
19. 19.🛟 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
20. 20.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a mirror (c) coins (d) a ruler
21. 21.True or false: an electric tower gets its strength from arches or domes. (a) True (b) False
22. 22.⚖️ 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
23. 23.True or false: a battery cell is not needed for the paper bridge. (a) True (b) False
24. 24.True or false: an eggshell gets its strength from arches or domes. (a) False (b) True
25. 25.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a mirror (c) yeast (d) two books
26. 26.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a magnet (d) coins
28. 28.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.True or false: one flat sheet makes a strong bridge. (a) False (b) True
30. 30.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
31. 31.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
32. 32.⚖️ 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 coins (c) coins it holds (d) the kind of paper
33. 33.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a ruler (c) sheets of paper (d) turmeric powder
34. 34.True or false: a mirror is not needed for the paper bridge. (a) False (b) True
35. 35.🧺 Which of these is needed for the paper bridge? (a) yeast (b) sheets of paper (c) a balloon (d) turmeric powder
36. 36.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
37. 37.🏗️ Which of these gets its strength from a tube shape? (a) a round pillar (b) an electric tower (c) a roof frame (d) a bridge truss
38. 38.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
39. 39.🌉 Which of these makes a weak bridge? (a) a flat tissue (b) a U-shaped channel (c) a zigzag-folded sheet (d) rolled paper tubes
40. 40.True or false: a wet flat sheet makes a strong bridge. (a) True (b) False

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