Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 828 · 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: 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
2. 2.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a flat tissue (c) paper with folded edges (d) rolled paper tubes
3. 3.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) rub your eyes (c) skip washing (d) lick your fingers
4. 4.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a roof frame (c) a hollow bird bone (d) an eggshell
5. 5.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) yeast (c) turmeric powder (d) a magnet
6. 6.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
7. 7.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
9. 9.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
10. 10.🔍 Which is the odd one out? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a U-shaped channel (d) a torn flat sheet
11. 11.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) True (b) False
12. 12.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
13. 13.True or false: yeast is not needed for the paper bridge. (a) True (b) False
14. 14.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.True or false: a battery cell is needed for the paper bridge. (a) True (b) False
16. 16.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a bamboo pole (c) an old stone bridge (d) an electric tower
17. 17.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.True or false: sheets of paper is not needed for the paper bridge. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a wet flat sheet (b) a zigzag-folded sheet (c) a flat tissue (d) one flat sheet
20. 20.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
21. 21.True or false: a bamboo pole gets its strength from triangles. (a) True (b) False
22. 22.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the triangle (c) the heart shape (d) the star
23. 23.🏗️ Where does a temple dome get its strength from? (a) tubes (b) arches and domes (c) triangles
24. 24.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) a ruler (c) a balloon (d) two books
25. 25.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a battery cell (c) sheets of paper (d) coins
26. 26.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
27. 27.True or false: two books is needed for the paper bridge. (a) False (b) True
28. 28.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) only water (c) fewer coins (d) more coins
29. 29.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) a bamboo pole (c) an old stone bridge (d) a round pillar
30. 30.True or false: sheets of paper is needed for the paper bridge. (a) False (b) True
31. 31.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) fewer (c) more (d) the same number of
32. 32.🌉 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 are magnetic (d) folds add glue
33. 33.🏗️ Where does a roof frame get its strength from? (a) tubes (b) arches and domes (c) triangles
34. 34.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
35. 35.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a U-shaped channel (c) paper with folded edges (d) one flat sheet
36. 36.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it turns to card (c) it gets stronger (d) it sags and falls
37. 37.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) False (b) True
38. 38.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) False (b) True
39. 39.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
40. 40.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) high and wobbly (c) low and steady (d) on a stool edge

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