Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 431 · 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 weak bridge? (a) a U-shaped channel (b) a zigzag-folded sheet (c) one flat sheet (d) paper with folded edges
2. 2.🏗️ Which of these gets its strength from triangles? (a) a bamboo pole (b) an electric tower (c) a temple dome (d) an eggshell
3. 3.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) the kind of coins (c) coins it holds (d) the kind of paper
4. 4.True or false: a bamboo pole gets its strength from arches or domes. (a) True (b) False
5. 5.🛟 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
6. 6.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) coins (c) a mirror (d) two books
7. 7.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) one flat sheet (c) a wet flat sheet (d) rolled paper tubes
8. 8.⚖️ 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
9. 9.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
10. 10.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
11. 11.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a magnet (d) coins
12. 12.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) True (b) False
13. 13.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) fewer coins (d) the same coins
14. 14.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
15. 15.🌉 Which of these makes a strong bridge? (a) a zigzag-folded sheet (b) one flat sheet (c) a flat tissue (d) a torn flat sheet
16. 16.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) coins it holds (b) the shape of the paper (c) where coins are placed (d) the kind of paper
17. 17.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
18. 18.🏗️ Which of these gets its strength from arches or domes? (a) an old stone bridge (b) a bamboo pole (c) a hollow bird bone (d) an electric tower
19. 19.🏗️ Where does an eggshell get its strength from? (a) triangles (b) arches and domes (c) tubes
20. 20.True or false: yeast is not needed for the paper bridge. (a) True (b) False
21. 21.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it wet (c) folds make it stiffer (d) folds add glue
22. 22.True or false: a flat tissue makes a strong bridge. (a) False (b) True
23. 23.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) a wet flat sheet (d) a zigzag-folded sheet
24. 24.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) zero (c) fewer (d) more
25. 25.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) two books (c) sheets of paper (d) a battery cell
26. 26.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
27. 27.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is the one thing we change. (a) False (b) True
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a balloon (d) two books
29. 29.🔍 Which is the odd one out? (a) a torn flat sheet (b) a wet flat sheet (c) a flat tissue (d) a zigzag-folded sheet
30. 30.True or false: sheets of paper is not needed for the paper bridge. (a) False (b) True
31. 31.🔮 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
32. 32.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) False (b) True
33. 33.🌉 Which of these makes a weak bridge? (a) a flat tissue (b) paper with folded edges (c) a zigzag-folded sheet (d) rolled paper tubes
34. 34.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) turmeric powder (c) two books (d) a ruler
35. 35.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) two books (c) a battery cell (d) a ruler
37. 37.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
38. 38.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it sags and falls (c) it floats up (d) it turns to card
39. 39.🧺 Which of these is not needed for the paper bridge? (a) coins (b) two books (c) sheets of paper (d) a magnet
40. 40.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed

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