Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 50 · 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 make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) the same number of (c) zero (d) more
2. 2.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is what we measure. (a) False (b) True
3. 3.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) the kind of paper (c) the gap between books (d) the kind of coins
4. 4.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) one flat sheet (c) a flat tissue (d) a zigzag-folded sheet
5. 5.🔍 Which is the odd one out? (a) a flat tissue (b) one flat sheet (c) paper with folded edges (d) a torn flat sheet
6. 6.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) sheets of paper (c) a ruler (d) coins
7. 7.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) a zigzag-folded sheet (d) one flat sheet
8. 8.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) rub your eyes (c) wash your hands (d) lick your fingers
9. 9.True or false: a U-shaped channel makes a strong bridge. (a) True (b) False
10. 10.True or false: paper with folded edges makes a strong bridge. (a) False (b) True
11. 11.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
12. 12.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
13. 13.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) paper with folded edges (c) a wet flat sheet (d) rolled paper tubes
14. 14.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a bamboo pole (c) an old stone bridge (d) a bridge truss
15. 15.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) upward (c) less (d) more
17. 17.True or false: a mirror is not needed for the paper bridge. (a) False (b) True
18. 18.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
19. 19.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is the one thing we change. (a) True (b) False
20. 20.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) the same coins (c) more coins (d) fewer coins
21. 21.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) a magnet (d) two books
22. 22.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is very hot (c) it is magnetic (d) its curved arch shape
23. 23.True or false: sheets of paper is not needed for the paper bridge. (a) True (b) False
24. 24.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) paper with folded edges (c) a torn flat sheet (d) rolled paper tubes
25. 25.True or false: yeast is needed for the paper bridge. (a) True (b) False
26. 26.True or false: a magnet is not needed for the paper bridge. (a) False (b) True
27. 27.True or false: a torn flat sheet makes a strong bridge. (a) True (b) False
28. 28.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) tubes (c) arches and domes
29. 29.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) where coins are placed (c) the shape of the paper
30. 30.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a round pillar (c) an old stone bridge (d) a roof frame
31. 31.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
32. 32.🧺 Which of these is needed for the paper bridge? (a) two books (b) a balloon (c) a battery cell (d) yeast
33. 33.True or false: an old stone bridge gets its strength from a tube shape. (a) True (b) False
34. 34.True or false: a hollow bird bone gets its strength from arches or domes. (a) False (b) True
35. 35.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
36. 36.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ 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
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.⚖️ 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) where coins are placed (c) the kind of coins (d) the kind of paper
40. 40.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds make it stiffer (d) folds are magnetic

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