Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 68 · 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.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
2. 2.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) rolled paper tubes (c) a wet flat sheet (d) a zigzag-folded sheet
3. 3.🔍 Which is the odd one out? (a) paper with folded edges (b) a zigzag-folded sheet (c) a U-shaped channel (d) one flat sheet
4. 4.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds are magnetic (c) folds add glue (d) folds make it stiffer
5. 5.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) two books (d) a balloon
6. 6.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) False (b) True
7. 7.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) a magnet (c) a mirror (d) turmeric powder
8. 8.True or false: two books is not needed for the paper bridge. (a) False (b) True
9. 9.True or false: a torn flat sheet makes a strong bridge. (a) True (b) False
10. 10.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
11. 11.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) fewer coins (c) the same coins (d) more coins
12. 12.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) more (c) less (d) not at all
13. 13.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
14. 14.True or false: a round pillar gets its strength from triangles. (a) False (b) True
15. 15.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is made of steel (c) it is very hot (d) its curved arch shape
16. 16.🏗️ Which of these gets its strength from triangles? (a) a bamboo pole (b) an old stone bridge (c) a bridge truss (d) a hollow bird bone
17. 17.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
18. 18.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
19. 19.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) yeast (c) coins (d) a mirror
21. 21.🏗️ Where does a round pillar get its strength from? (a) arches and domes (b) tubes (c) triangles
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the heart shape (c) the triangle (d) the star
25. 25.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) rolled paper tubes (c) paper with folded edges (d) a wet flat sheet
26. 26.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the kind of coins (c) coins it holds
27. 27.🏗️ Where does a bamboo pole get its strength from? (a) tubes (b) triangles (c) arches and domes
28. 28.🏗️ Which of these gets its strength from triangles? (a) an electric tower (b) a bamboo pole (c) a temple dome (d) an eggshell
29. 29.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) one flat sheet (c) a torn flat sheet (d) rolled paper tubes
30. 30.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) False (b) True
31. 31.True or false: a magnet is not needed for the paper bridge. (a) False (b) True
32. 32.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) high and wobbly (c) low and steady (d) on top of a pet
33. 33.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) weak bridge (b) strong bridge
34. 34.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.🔍 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
36. 36.🏗️ Which of these gets its strength from arches or domes? (a) a temple dome (b) a roof frame (c) a hollow bird bone (d) a round pillar
37. 37.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) a torn flat sheet (c) a flat tissue (d) a wet flat sheet
38. 38.True or false: a U-shaped channel makes a weak bridge. (a) False (b) True
39. 39.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) an electric tower (c) a bamboo pole (d) a bridge truss
40. 40.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) skip washing (c) wash your hands (d) lick your fingers

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