Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 305 · 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? What do we do with “the shape of the paper”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) sheets of paper (c) a ruler (d) coins
3. 3.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) the gap between books (c) the kind of paper (d) the kind of coins
4. 4.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) more (c) zero (d) the same number of
5. 5.🥚 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
6. 6.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
7. 7.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
8. 8.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
9. 9.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
10. 10.True or false: a wet flat sheet makes a strong bridge. (a) True (b) False
11. 11.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the shape of the paper (b) the gap between books (c) the kind of paper (d) coins it holds
12. 12.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
13. 13.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) on a stool edge (d) low and steady
15. 15.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the star (c) the heart shape (d) the triangle
16. 16.True or false: an old stone bridge gets its strength from a tube shape. (a) True (b) False
17. 17.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a flat tissue (c) a U-shaped channel (d) one flat sheet
18. 18.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
19. 19.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
20. 20.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
21. 21.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is the one thing we change. (a) True (b) False
22. 22.🏗️ Which of these gets its strength from a tube shape? (a) a temple dome (b) a roof frame (c) an electric tower (d) a round pillar
23. 23.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a flat tissue (c) one flat sheet (d) rolled paper tubes
24. 24.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) tubes (c) triangles
25. 25.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) False (b) True
26. 26.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) a battery cell (c) coins (d) a mirror
27. 27.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
28. 28.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
29. 29.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: turmeric powder is needed for the paper bridge. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) paper with folded edges (b) a zigzag-folded sheet (c) one flat sheet (d) rolled paper tubes
32. 32.True or false: an eggshell gets its strength from triangles. (a) True (b) False
33. 33.True or false: one flat sheet makes a weak bridge. (a) False (b) True
34. 34.True or false: yeast is needed for the paper bridge. (a) False (b) True
35. 35.🌉 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 wet (d) folds make it stiffer
36. 36.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) a bridge truss (c) an old stone bridge (d) a bamboo pole
37. 37.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
38. 38.🏗️ Which of these gets its strength from a tube shape? (a) a hollow bird bone (b) an eggshell (c) a bridge truss (d) an electric tower
39. 39.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) rolled paper tubes (d) a flat tissue
40. 40.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) only water (c) the same coins (d) more coins

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