Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 524 · 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 kept the same? (a) coins it holds (b) the shape of the paper (c) where coins are placed
2. 2.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
3. 3.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) tubes (c) triangles
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) coins (c) a ruler (d) sheets of paper
6. 6.🧺 Which of these is needed for the paper bridge? (a) yeast (b) turmeric powder (c) sheets of paper (d) a battery cell
7. 7.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds add glue (c) folds are magnetic (d) folds make it wet
8. 8.True or false: a flat tissue makes a weak bridge. (a) True (b) False
9. 9.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is what we measure. (a) True (b) False
10. 10.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a mirror (b) coins (c) a ruler (d) two books
11. 11.🔍 Which is the odd one out? (a) a torn flat sheet (b) a wet flat sheet (c) one flat sheet (d) rolled paper tubes
12. 12.🔍 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
13. 13.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a zigzag-folded sheet (c) a U-shaped channel (d) a flat tissue
14. 14.True or false: a mirror is not needed for the paper bridge. (a) True (b) False
15. 15.True or false: a flat tissue makes a strong bridge. (a) False (b) True
16. 16.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) yeast (c) a ruler (d) sheets of paper
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) coins (d) a balloon
18. 18.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is made of steel (c) it is very hot (d) it is magnetic
19. 19.True or false: one flat sheet makes a weak bridge. (a) False (b) True
20. 20.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
21. 21.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) wash your hands (c) skip washing (d) rub your eyes
22. 22.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) less (c) not at all (d) upward
23. 23.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a roof frame (c) a bamboo pole (d) a round pillar
24. 24.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on a stool edge (c) low and steady (d) on top of a pet
25. 25.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the star (b) the heart shape (c) the square (d) the triangle
26. 26.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
27. 27.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
28. 28.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) rolled paper tubes (c) a wet flat sheet (d) paper with folded edges
29. 29.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) two books (c) a mirror (d) yeast
30. 30.⚖️ 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
31. 31.🔍 Which is the odd one out? (a) a torn flat sheet (b) a wet flat sheet (c) a flat tissue (d) a U-shaped channel
32. 32.True or false: a ruler is needed for the paper bridge. (a) False (b) True
33. 33.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) False (b) True
34. 34.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
35. 35.True or false: rolled paper tubes makes a strong bridge. (a) False (b) True
36. 36.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
37. 37.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) coins (d) yeast
38. 38.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a magnet (c) coins (d) sheets of paper

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