Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 533 · 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 makes a strong bridge? (a) a torn flat sheet (b) paper with folded edges (c) a flat tissue (d) one flat sheet
2. 2.🌉 Which of these makes a strong bridge? (a) a zigzag-folded sheet (b) a wet flat sheet (c) one flat sheet (d) a flat tissue
3. 3.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it turns to card (c) it floats up (d) it sags and falls
4. 4.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) the same number of (c) fewer (d) zero
5. 5.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) turmeric powder (c) a ruler (d) sheets of paper
6. 6.🌉 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
7. 7.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) skip washing (c) wash your hands (d) rub your eyes
8. 8.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) more coins (c) only water (d) fewer coins
9. 9.🏗️ Where does a roof frame get its strength from? (a) triangles (b) arches and domes (c) tubes
10. 10.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) a zigzag-folded sheet (c) a wet flat sheet (d) paper with folded edges
11. 11.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) coins (c) a balloon (d) two books
13. 13.🔺 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
14. 14.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a magnet (c) a ruler (d) turmeric powder
15. 15.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a torn flat sheet (c) a flat tissue (d) a U-shaped channel
16. 16.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
17. 17.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) its curved arch shape (d) it is made of steel
18. 18.🔮 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
19. 19.🔍 Which is the odd one out? (a) rolled paper tubes (b) a U-shaped channel (c) a flat tissue (d) a zigzag-folded sheet
20. 20.🏗️ Where does a temple dome get its strength from? (a) tubes (b) arches and domes (c) triangles
21. 21.🏗️ Where does a bridge truss get its strength from? (a) triangles (b) tubes (c) arches and domes
22. 22.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) coins it holds (c) the kind of paper
23. 23.True or false: two books is needed for the paper bridge. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.⚖️ 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 paper (c) coins it holds (d) the gap between books
27. 27.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) a flat tissue (d) rolled paper tubes
28. 28.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a U-shaped channel (d) one flat sheet
29. 29.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) a magnet (d) sheets of paper
30. 30.True or false: a ruler is not needed for the paper bridge. (a) False (b) True
31. 31.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a mirror (c) sheets of paper (d) a ruler
32. 32.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) a hollow bird bone (c) a bridge truss (d) a temple dome
33. 33.🧺 Which of these is not needed for the paper bridge? (a) a mirror (b) two books (c) a ruler (d) sheets of paper
34. 34.🧺 Which of these is not needed for the paper bridge? (a) turmeric powder (b) a ruler (c) sheets of paper (d) two books
35. 35.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) an electric tower (c) a hollow bird bone (d) an old stone bridge
36. 36.🔍 Which is the odd one out? (a) one flat sheet (b) paper with folded edges (c) a wet flat sheet (d) a torn flat sheet
37. 37.🔍 Which is the odd one out? (a) one flat sheet (b) a U-shaped channel (c) a flat tissue (d) a wet flat sheet
38. 38.🔍 Which is the odd one out? (a) paper with folded edges (b) rolled paper tubes (c) a zigzag-folded sheet (d) one flat sheet
39. 39.🏗️ Which of these gets its strength from arches or domes? (a) a bamboo pole (b) a round pillar (c) a temple dome (d) an electric tower
40. 40.🔍 Which is the odd one out? (a) a torn flat sheet (b) a flat tissue (c) a zigzag-folded sheet (d) a wet flat sheet

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