Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 115 · 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 of these makes a strong bridge? (a) rolled paper tubes (b) one flat sheet (c) a flat tissue (d) a wet flat sheet
2. 2.🏗️ Where does an electric tower get its strength from? (a) tubes (b) triangles (c) arches and domes
3. 3.🔮 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
4. 4.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) zero (c) the same number of (d) more
5. 5.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
6. 6.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
7. 7.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
8. 8.⚖️ 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
9. 9.True or false: a wet flat sheet makes a weak bridge. (a) True (b) False
10. 10.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a hollow bird bone (c) a roof frame (d) a temple dome
11. 11.🔍 Which is the odd one out? (a) a torn flat sheet (b) paper with folded edges (c) a wet flat sheet (d) a flat tissue
12. 12.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
13. 13.True or false: one flat sheet makes a strong bridge. (a) False (b) True
14. 14.🧺 Which of these is needed for the paper bridge? (a) yeast (b) sheets of paper (c) a balloon (d) turmeric powder
15. 15.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) coins (c) sheets of paper (d) two books
16. 16.True or false: a temple dome gets its strength from triangles. (a) True (b) False
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) sheets of paper (c) a ruler (d) coins
18. 18.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) False (b) True
19. 19.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
20. 20.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) on a stool edge (d) low and steady
22. 22.True or false: a magnet is not needed for the paper bridge. (a) False (b) True
23. 23.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) coins it holds (c) the gap between books
24. 24.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) yeast (c) coins (d) a ruler
25. 25.🔺 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
26. 26.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) True (b) False
27. 27.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) skip washing (c) rub your eyes (d) lick your fingers
28. 28.🏗️ Where does a round pillar get its strength from? (a) tubes (b) arches and domes (c) triangles
29. 29.🏗️ Where does a temple dome get its strength from? (a) arches and domes (b) triangles (c) 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) True (b) False
31. 31.🔍 Which is the odd one out? (a) a U-shaped channel (b) a zigzag-folded sheet (c) rolled paper tubes (d) a torn flat sheet
32. 32.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
33. 33.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a wet flat sheet (c) a torn flat sheet (d) paper with folded edges
34. 34.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it wet (c) folds are magnetic (d) folds make it stiffer
35. 35.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a battery cell (c) coins (d) a ruler
37. 37.True or false: paper with folded edges makes a strong bridge. (a) False (b) True
38. 38.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of paper (b) the shape of the paper (c) coins it holds (d) the gap between books
39. 39.True or false: paper with folded edges makes a weak bridge. (a) False (b) True
40. 40.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) fewer coins (c) only water (d) more coins

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