Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 731 · 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.🔍 Which is the odd one out? (a) rolled paper tubes (b) one flat sheet (c) a U-shaped channel (d) a zigzag-folded sheet
2. 2.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
3. 3.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) less (c) not at all (d) upward
4. 4.🏗️ Which of these gets its strength from a tube shape? (a) an old stone bridge (b) a temple dome (c) an eggshell (d) a round pillar
5. 5.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) only water (c) more coins (d) fewer coins
6. 6.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the star (c) the square (d) the heart shape
7. 7.True or false: coins is needed for the paper bridge. (a) False (b) True
8. 8.True or false: a magnet is not needed for the paper bridge. (a) True (b) False
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.True or false: a magnet is needed for the paper bridge. (a) False (b) True
11. 11.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) where coins are placed (b) the shape of the paper (c) coins it holds
12. 12.True or false: sheets of paper is not needed for the paper bridge. (a) False (b) True
13. 13.⚖️ 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 paper (c) where coins are placed (d) the shape of the paper
14. 14.True or false: a mirror is needed for the paper bridge. (a) False (b) True
15. 15.🏗️ Where does a bridge truss get its strength from? (a) triangles (b) arches and domes (c) tubes
16. 16.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) high and wobbly (d) low and steady
17. 17.True or false: a balloon is not needed for the paper bridge. (a) False (b) True
18. 18.⚖️ 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 change it (c) we measure it
19. 19.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a hollow bird bone (c) a roof frame (d) an eggshell
20. 20.🏗️ Which of these gets its strength from arches or domes? (a) a bamboo pole (b) a roof frame (c) a hollow bird bone (d) an old stone bridge
21. 21.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds are magnetic (d) folds make it stiffer
23. 23.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) two books (c) coins (d) sheets of paper
24. 24.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) zero (c) more (d) the same number of
25. 25.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
26. 26.True or false: a balloon is needed for the paper bridge. (a) True (b) False
27. 27.True or false: turmeric powder is not needed for the paper bridge. (a) False (b) True
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.🧺 Which of these is not needed for the paper bridge? (a) coins (b) two books (c) sheets of paper (d) yeast
30. 30.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
31. 31.⚖️ 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
32. 32.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) an old stone bridge (c) a temple dome (d) a bridge truss
33. 33.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
34. 34.True or false: an old stone bridge gets its strength from a tube shape. (a) True (b) False
35. 35.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) a magnet (d) two books
36. 36.True or false: yeast is needed for the paper bridge. (a) True (b) False
37. 37.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) rub your eyes (c) lick your fingers (d) wash your hands
38. 38.🔍 Which is the odd one out? (a) a wet flat sheet (b) a torn flat sheet (c) a flat tissue (d) a zigzag-folded sheet
39. 39.True or false: turmeric powder is needed for the paper bridge. (a) True (b) False
40. 40.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it sags and falls (c) it gets stronger (d) it floats up

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