Paper Bridge STEM Challenge Worksheet

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

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