Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 157 · 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.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) fewer coins (d) the same coins
2. 2.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a mirror (b) sheets of paper (c) two books (d) coins
3. 3.🧺 Which of these is not needed for the paper bridge? (a) coins (b) yeast (c) a ruler (d) sheets of paper
4. 4.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) two books (c) sheets of paper (d) a ruler
5. 5.True or false: a hollow bird bone gets its strength from triangles. (a) False (b) True
6. 6.🔺 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
7. 7.True or false: an old stone bridge gets its strength from triangles. (a) False (b) True
8. 8.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) arches and domes (c) triangles
9. 9.True or false: a flat tissue makes a strong bridge. (a) True (b) False
10. 10.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) True (b) False
11. 11.True or false: a mirror is not needed for the paper bridge. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a wet flat sheet (b) a flat tissue (c) rolled paper tubes (d) a torn flat sheet
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) coins (d) a magnet
16. 16.🏗️ Which of these gets its strength from arches or domes? (a) a hollow bird bone (b) a temple dome (c) a bamboo pole (d) a roof frame
17. 17.True or false: a mirror is needed for the paper bridge. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a U-shaped channel (b) paper with folded edges (c) rolled paper tubes (d) one flat sheet
19. 19.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
20. 20.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) zero (c) the same number of (d) more
21. 21.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) not at all (c) more (d) upward
22. 22.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it stiffer (c) folds make it wet (d) folds add glue
23. 23.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
24. 24.🏗️ Where does a bamboo pole get its strength from? (a) tubes (b) triangles (c) arches and domes
25. 25.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) it is made of steel (d) its curved arch shape
26. 26.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
27. 27.🏗️ Where does a round pillar get its strength from? (a) arches and domes (b) tubes (c) triangles
28. 28.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a wet flat sheet (c) paper with folded edges (d) one flat sheet
29. 29.True or false: yeast is needed for the paper bridge. (a) True (b) False
30. 30.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) sheets of paper (c) turmeric powder (d) a magnet
31. 31.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
32. 32.True or false: a balloon is not needed for the paper bridge. (a) True (b) False
33. 33.True or false: two books is not needed for the paper bridge. (a) False (b) True
34. 34.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) an eggshell (c) a bamboo pole (d) a bridge truss
35. 35.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a wet flat sheet (c) a torn flat sheet (d) a U-shaped channel
36. 36.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) coins (c) a ruler (d) a mirror
37. 37.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a U-shaped channel (d) a wet flat sheet
38. 38.🔍 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
39. 39.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) a ruler (d) yeast
40. 40.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we keep it the same (c) we measure it

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