Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 103 · 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 roof frame gets its strength from triangles. (a) False (b) True
2. 2.True or false: a roof frame gets its strength from arches or domes. (a) True (b) False
3. 3.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
4. 4.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) coins (c) two books (d) sheets of paper
5. 5.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) coins it holds (c) where coins are placed (d) the kind of coins
6. 6.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) a hollow bird bone (c) an old stone bridge (d) a roof frame
7. 7.True or false: an electric tower gets its strength from arches or domes. (a) True (b) False
8. 8.True or false: one flat sheet makes a strong bridge. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) paper with folded edges (b) a torn flat sheet (c) one flat sheet (d) a flat tissue
10. 10.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) high and wobbly (d) low and steady
11. 11.🌉 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
12. 12.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) a ruler (c) a magnet (d) yeast
13. 13.🔍 Which is the odd one out? (a) a torn flat sheet (b) a flat tissue (c) rolled paper tubes (d) a wet flat sheet
14. 14.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) fewer coins (c) the same coins (d) only water
15. 15.True or false: an old stone bridge gets its strength from arches or domes. (a) False (b) True
16. 16.⚖️ 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
17. 17.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) True (b) False
18. 18.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
19. 19.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
20. 20.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
21. 21.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) the same number of (c) more (d) zero
22. 22.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) a balloon (c) sheets of paper (d) two books
24. 24.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
25. 25.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
26. 26.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a mirror (b) two books (c) coins (d) sheets of paper
27. 27.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) weak bridge (b) strong bridge
28. 28.🔮 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
29. 29.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
30. 30.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🏗️ Where does a round pillar get its strength from? (a) arches and domes (b) triangles (c) tubes
32. 32.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of coins (b) the shape of the paper (c) where coins are placed (d) the kind of paper
33. 33.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
34. 34.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it sags and falls (c) it turns to card (d) it floats up
35. 35.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) sheets of paper (d) a magnet
36. 36.True or false: one flat sheet makes a weak bridge. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a U-shaped channel (b) a torn flat sheet (c) paper with folded edges (d) a zigzag-folded sheet
38. 38.⚖️ 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
39. 39.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the triangle (c) the star (d) the heart shape
40. 40.⚖️ 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

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