Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 411 · 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.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it stiffer (c) folds are magnetic (d) folds make it wet
2. 2.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) more (c) the same number of (d) zero
4. 4.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) fewer coins (d) the same coins
5. 5.True or false: a flat tissue makes a strong bridge. (a) True (b) False
6. 6.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) a mirror (d) coins
7. 7.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is kept the same. (a) False (b) True
8. 8.True or false: one flat sheet makes a weak bridge. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a balloon (c) a ruler (d) a battery cell
11. 11.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
12. 12.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of coins (b) coins it holds (c) where coins are placed (d) the shape of the paper
13. 13.🔍 Which is the odd one out? (a) a flat tissue (b) a zigzag-folded sheet (c) a torn flat sheet (d) one flat sheet
14. 14.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a balloon (c) sheets of paper (d) a battery cell
15. 15.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
16. 16.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
17. 17.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
18. 18.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) yeast (d) sheets of paper
19. 19.True or false: a temple dome gets its strength from triangles. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a U-shaped channel (d) a torn flat sheet
21. 21.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the heart shape (c) the square (d) the star
22. 22.True or false: turmeric powder is not needed for the paper bridge. (a) True (b) False
23. 23.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
24. 24.🏗️ Which of these gets its strength from a tube shape? (a) a bamboo pole (b) an eggshell (c) an electric tower (d) a bridge truss
25. 25.⚖️ 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
26. 26.True or false: a bridge truss gets its strength from arches or domes. (a) True (b) False
27. 27.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is made of steel (c) it is magnetic (d) it is very hot
28. 28.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) high and wobbly (c) on a stool edge (d) low and steady
29. 29.🏗️ Where does a temple dome get its strength from? (a) arches and domes (b) tubes (c) triangles
30. 30.True or false: an electric tower gets its strength from triangles. (a) True (b) False
31. 31.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) True (b) False
32. 32.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) the shape of the paper (c) the kind of coins (d) where coins are placed
33. 33.⚖️ 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
34. 34.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
35. 35.True or false: a balloon is not needed for the paper bridge. (a) True (b) False
36. 36.🧺 Which of these is not needed for the paper bridge? (a) yeast (b) two books (c) coins (d) a ruler
37. 37.True or false: yeast is not needed for the paper bridge. (a) False (b) True
38. 38.True or false: a battery cell is not needed for the paper bridge. (a) True (b) False
39. 39.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
40. 40.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) a temple dome (c) an eggshell (d) an electric tower

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