Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 978 · 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 ruler (b) a magnet (c) sheets of paper (d) coins
2. 2.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
3. 3.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) coins (c) two books (d) a mirror
4. 4.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is kept the same. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) rolled paper tubes (b) a U-shaped channel (c) a zigzag-folded sheet (d) a flat tissue
6. 6.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) coins (d) turmeric powder
7. 7.⚖️ 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) the kind of coins
8. 8.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) coins (c) a balloon (d) a mirror
9. 9.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) low and steady (c) on top of a pet (d) high and wobbly
10. 10.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the star (b) the square (c) the triangle (d) the heart shape
11. 11.🏗️ Which of these gets its strength from arches or domes? (a) a hollow bird bone (b) an eggshell (c) an electric tower (d) a roof frame
12. 12.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) a bridge truss (c) a hollow bird bone (d) a temple dome
13. 13.⚖️ 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) coins it holds (d) the shape of the paper
14. 14.True or false: a battery cell is not needed for the paper bridge. (a) True (b) False
15. 15.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) its curved arch shape (d) it is made of steel
16. 16.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) arches and domes (c) triangles
17. 17.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) triangles (c) tubes
18. 18.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
19. 19.True or false: a U-shaped channel makes a strong bridge. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) a flat tissue (c) one flat sheet (d) a torn flat sheet
21. 21.⚖️ 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 change it (c) we measure it
22. 22.True or false: a flat tissue makes a strong bridge. (a) False (b) True
23. 23.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) paper with folded edges (c) a torn flat sheet (d) a zigzag-folded sheet
24. 24.⚖️ 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 change it (c) we keep it the same
25. 25.🔍 Which is the odd one out? (a) a U-shaped channel (b) rolled paper tubes (c) paper with folded edges (d) a wet flat sheet
26. 26.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) the kind of coins (c) the gap between books (d) coins it holds
27. 27.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
28. 28.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) fewer coins (c) more coins (d) only water
29. 29.True or false: a ruler is needed for the paper bridge. (a) True (b) False
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) two books (c) a balloon (d) a battery cell
32. 32.⚖️ 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
33. 33.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
34. 34.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
35. 35.True or false: an electric tower gets its strength from triangles. (a) False (b) True
36. 36.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) a battery cell (c) a mirror (d) a ruler
37. 37.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the gap between books (b) coins it holds (c) the shape of the paper
38. 38.🌉 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
39. 39.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) skip washing (c) rub your eyes (d) lick your fingers
40. 40.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is the one thing we change. (a) False (b) True

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