Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 47 · 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.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) a ruler (d) a balloon
2. 2.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) sheets of paper (d) yeast
4. 4.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) fewer coins (c) the same coins (d) more coins
5. 5.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the heart shape (b) the square (c) the star (d) the triangle
6. 6.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
7. 7.True or false: turmeric powder is not needed for the paper bridge. (a) False (b) True
8. 8.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
9. 9.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is magnetic (c) its curved arch shape (d) it is very hot
10. 10.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a mirror (c) two books (d) sheets of paper
12. 12.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
13. 13.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
14. 14.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) coins it holds (b) the kind of coins (c) the shape of the paper (d) where coins are placed
15. 15.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) arches and domes (c) tubes
16. 16.True or false: a round pillar gets its strength from triangles. (a) False (b) True
17. 17.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
18. 18.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it floats up (c) it sags and falls (d) it gets stronger
19. 19.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a torn flat sheet (d) paper with folded edges
20. 20.True or false: a wet flat sheet makes a strong bridge. (a) True (b) False
21. 21.🏗️ Where does an electric tower get its strength from? (a) tubes (b) triangles (c) arches and domes
22. 22.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it wet (c) folds make it stiffer (d) folds add glue
23. 23.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) more (c) fewer (d) the same number of
24. 24.🌉 Which of these makes a strong bridge? (a) paper with folded edges (b) one flat sheet (c) a wet flat sheet (d) a torn flat sheet
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 measure it (c) we keep it the same
26. 26.True or false: a roof frame gets its strength from a tube shape. (a) False (b) True
27. 27.🏗️ Where does an eggshell get its strength from? (a) tubes (b) triangles (c) arches and domes
28. 28.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
29. 29.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
30. 30.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
31. 31.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
32. 32.True or false: a battery cell is not needed for the paper bridge. (a) False (b) True
33. 33.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
34. 34.🏗️ Which of these gets its strength from a tube shape? (a) a round pillar (b) an eggshell (c) an old stone bridge (d) a bridge truss
35. 35.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a roof frame (c) an eggshell (d) a hollow bird bone
36. 36.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) coins (c) a mirror (d) yeast
37. 37.True or false: a U-shaped channel makes a strong bridge. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) paper with folded edges (b) one flat sheet (c) a flat tissue (d) a torn flat sheet
39. 39.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) True (b) False
40. 40.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is kept the same. (a) False (b) True

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