Paper Bridge STEM Challenge Worksheet

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

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