Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 85 · 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.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) a ruler (c) coins (d) sheets of paper
2. 2.True or false: an old stone bridge gets its strength from arches or domes. (a) False (b) True
3. 3.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
4. 4.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the shape of the paper (b) coins it holds (c) the kind of paper (d) where coins are placed
5. 5.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) True (b) False
6. 6.True or false: a torn flat sheet makes a weak bridge. (a) False (b) True
7. 7.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a balloon (c) a ruler (d) turmeric powder
8. 8.🏗️ Where does an eggshell get its strength from? (a) triangles (b) arches and domes (c) tubes
9. 9.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) a bamboo pole (c) an eggshell (d) a hollow bird bone
10. 10.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) sheets of paper (d) a mirror
11. 11.🔍 Which is the odd one out? (a) a flat tissue (b) a torn flat sheet (c) one flat sheet (d) a zigzag-folded sheet
12. 12.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the kind of paper (c) the shape of the paper
13. 13.🥚 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
14. 14.⚖️ 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 gap between books (c) the shape of the paper (d) the kind of paper
15. 15.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
16. 16.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the star (c) the square (d) the heart shape
18. 18.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) turmeric powder (c) two books (d) a battery cell
19. 19.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.True or false: a temple dome gets its strength from triangles. (a) False (b) True
21. 21.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) coins (c) a mirror (d) yeast
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a ruler (d) a magnet
24. 24.True or false: a battery cell is not needed for the paper bridge. (a) False (b) True
25. 25.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) more coins (c) fewer coins (d) only water
26. 26.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) an old stone bridge (c) an electric tower (d) a hollow bird bone
27. 27.True or false: sheets of paper is not needed for the paper bridge. (a) True (b) False
28. 28.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a wet flat sheet (c) one flat sheet (d) paper with folded edges
29. 29.🔍 Which is the odd one out? (a) a wet flat sheet (b) rolled paper tubes (c) a zigzag-folded sheet (d) a U-shaped channel
30. 30.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a zigzag-folded sheet (c) a wet flat sheet (d) a U-shaped channel
31. 31.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) fewer (c) more (d) the same number of
32. 32.True or false: a round pillar gets its strength from arches or domes. (a) True (b) False
33. 33.True or false: an electric tower gets its strength from arches or domes. (a) False (b) True
34. 34.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) a flat tissue (b) one flat sheet (c) a wet flat sheet (d) a U-shaped channel
36. 36.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) low and steady (d) high and wobbly
37. 37.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) where coins are placed (b) the shape of the paper (c) coins it holds
38. 38.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it gets stronger (c) it floats up (d) it turns to card
39. 39.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) paper with folded edges (c) one flat sheet (d) a U-shaped channel
40. 40.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it stiffer (c) folds are magnetic (d) folds make it wet

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