Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 400 · 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.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) where coins are placed (b) coins it holds (c) the shape of the paper (d) the kind of coins
2. 2.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is very hot (c) its curved arch shape (d) it is made of steel
3. 3.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it floats up (c) it sags and falls (d) it gets stronger
4. 4.True or false: rolled paper tubes makes a strong bridge. (a) False (b) True
5. 5.🌉 Which of these makes a weak bridge? (a) a flat tissue (b) paper with folded edges (c) rolled paper tubes (d) a zigzag-folded sheet
6. 6.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
7. 7.🔍 Which is the odd one out? (a) one flat sheet (b) a flat tissue (c) rolled paper tubes (d) a wet flat sheet
8. 8.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) coins (c) a ruler (d) sheets of paper
9. 9.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a mirror (c) coins (d) sheets of paper
10. 10.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.True or false: an electric tower gets its strength from arches or domes. (a) True (b) False
12. 12.⚖️ 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
13. 13.🏗️ Where does an eggshell get its strength from? (a) triangles (b) arches and domes (c) tubes
14. 14.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a flat tissue (c) rolled paper tubes (d) a torn flat sheet
15. 15.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a zigzag-folded sheet (c) rolled paper tubes (d) one flat sheet
16. 16.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) a round pillar (c) a bridge truss (d) an old stone bridge
17. 17.True or false: a mirror is needed for the paper bridge. (a) True (b) False
18. 18.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
19. 19.🌉 Which of these makes a weak bridge? (a) a torn flat sheet (b) a U-shaped channel (c) rolled paper tubes (d) a zigzag-folded sheet
20. 20.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) one flat sheet (b) rolled paper tubes (c) a U-shaped channel (d) a zigzag-folded sheet
22. 22.True or false: paper with folded edges makes a weak bridge. (a) False (b) True
23. 23.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
24. 24.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) triangles (c) tubes
25. 25.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) zero (c) fewer (d) the same number of
26. 26.🧺 Which of these is needed for the paper bridge? (a) yeast (b) turmeric powder (c) sheets of paper (d) a magnet
27. 27.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) yeast (c) sheets of paper (d) coins
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) coins (c) two books (d) a ruler
29. 29.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
30. 30.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) rolled paper tubes (c) a wet flat sheet (d) paper with folded edges
31. 31.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) rub your eyes (d) wash your hands
32. 32.🔺 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
33. 33.True or false: a magnet is not needed for the paper bridge. (a) True (b) False
34. 34.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
35. 35.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
36. 36.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) a temple dome (c) an eggshell (d) a roof frame
37. 37.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it stiffer (d) folds make it wet
38. 38.🔍 Which is the odd one out? (a) a U-shaped channel (b) a flat tissue (c) rolled paper tubes (d) a zigzag-folded sheet
39. 39.🧺 Which of these is not needed for the paper bridge? (a) coins (b) two books (c) yeast (d) sheets of paper
40. 40.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge

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