Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 381 · 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 make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) zero (d) fewer
2. 2.⚖️ 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 change it (c) we measure it
3. 3.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) triangles (c) tubes
4. 4.🔍 Which is the odd one out? (a) rolled paper tubes (b) a U-shaped channel (c) a torn flat sheet (d) paper with folded edges
5. 5.🏗️ Where does a temple dome get its strength from? (a) tubes (b) arches and domes (c) triangles
6. 6.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) on top of a pet (c) high and wobbly (d) on a stool edge
7. 7.🌉 Which of these makes a weak bridge? (a) one flat sheet (b) paper with folded edges (c) rolled paper tubes (d) a zigzag-folded sheet
8. 8.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
9. 9.True or false: a flat tissue makes a weak bridge. (a) True (b) False
10. 10.True or false: an electric tower gets its strength from triangles. (a) True (b) False
11. 11.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) a wet flat sheet (b) paper with folded edges (c) rolled paper tubes (d) a zigzag-folded sheet
13. 13.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) a hollow bird bone (c) a bridge truss (d) an old stone bridge
14. 14.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) rolled paper tubes (c) a U-shaped channel (d) a flat tissue
15. 15.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
16. 16.True or false: a flat tissue makes a strong bridge. (a) False (b) True
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a ruler (c) a mirror (d) coins
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a battery cell (d) coins
20. 20.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🔍 Which is the odd one out? (a) one flat sheet (b) a torn flat sheet (c) a flat tissue (d) a U-shaped channel
22. 22.True or false: a balloon is needed for the paper bridge. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a torn flat sheet (b) a flat tissue (c) a wet flat sheet (d) a zigzag-folded sheet
24. 24.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) coins (d) a balloon
25. 25.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.True or false: an eggshell gets its strength from triangles. (a) False (b) True
27. 27.True or false: a torn flat sheet makes a weak bridge. (a) False (b) True
28. 28.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) False (b) True
29. 29.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is the one thing we change. (a) True (b) False
30. 30.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it wet (c) folds make it stiffer (d) folds are magnetic
31. 31.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) upward (c) not at all (d) less
32. 32.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) where coins are placed (b) coins it holds (c) the shape of the paper
33. 33.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
34. 34.True or false: a roof frame gets its strength from a tube shape. (a) False (b) True
35. 35.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a ruler (d) turmeric powder
36. 36.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the star (b) the square (c) the heart shape (d) the triangle
37. 37.True or false: two books is not needed for the paper bridge. (a) False (b) True
38. 38.True or false: two books is needed for the paper bridge. (a) True (b) False
39. 39.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it sags and falls (c) it turns to card (d) it gets stronger
40. 40.⚖️ 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 measure it (c) we change it

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