Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 420 · 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 is the odd one out? (a) one flat sheet (b) a torn flat sheet (c) paper with folded edges (d) a wet flat sheet
2. 2.True or false: yeast is not needed for the paper bridge. (a) False (b) True
3. 3.🔍 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
4. 4.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
5. 5.True or false: a mirror is not needed for the paper bridge. (a) True (b) False
6. 6.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) sheets of paper (d) a magnet
7. 7.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the paper bridge? (a) a ruler (b) a magnet (c) a balloon (d) a mirror
9. 9.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) two books (c) a ruler (d) a battery cell
10. 10.🏗️ Where does a bridge truss get its strength from? (a) triangles (b) tubes (c) arches and domes
11. 11.🔍 Which is the odd one out? (a) a U-shaped channel (b) rolled paper tubes (c) paper with folded edges (d) one flat sheet
12. 12.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧺 Which of these is needed for the paper bridge? (a) yeast (b) sheets of paper (c) a balloon (d) a magnet
14. 14.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) an electric tower (c) a hollow bird bone (d) a temple dome
15. 15.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) the same coins (c) fewer coins (d) more coins
16. 16.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
17. 17.🏗️ Which of these gets its strength from a tube shape? (a) a bamboo pole (b) a temple dome (c) an electric tower (d) an old stone bridge
18. 18.True or false: a magnet is needed for the paper bridge. (a) True (b) False
19. 19.🌉 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
20. 20.True or false: a torn flat sheet makes a strong bridge. (a) True (b) False
21. 21.🏗️ Which of these gets its strength from a tube shape? (a) a hollow bird bone (b) a roof frame (c) an electric tower (d) an eggshell
22. 22.🏗️ Where does an electric tower get its strength from? (a) tubes (b) arches and domes (c) triangles
23. 23.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
24. 24.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
26. 26.True or false: sheets of paper is not needed for the paper bridge. (a) True (b) False
27. 27.True or false: a roof frame gets its strength from triangles. (a) True (b) False
28. 28.True or false: an eggshell gets its strength from triangles. (a) True (b) False
29. 29.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
30. 30.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
31. 31.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the kind of coins (c) the shape of the paper
32. 32.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) its curved arch shape (c) it is magnetic (d) it is made of steel
33. 33.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
34. 34.True or false: a flat tissue makes a weak bridge. (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? Which of these is the one thing we change? (a) the kind of coins (b) the shape of the paper (c) the kind of paper (d) the gap between books
37. 37.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) zero (c) the same number of (d) more
38. 38.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) not at all (c) more (d) less
39. 39.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) low and steady (c) high and wobbly (d) on top of a pet
40. 40.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True

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