Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 124 · 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.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) paper with folded edges (c) rolled paper tubes (d) a wet flat sheet
2. 2.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it turns to card (c) it floats up (d) it gets stronger
3. 3.🏗️ Where does a roof frame get its strength from? (a) triangles (b) tubes (c) arches and domes
4. 4.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) high and wobbly (d) low and steady
5. 5.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) a magnet (d) coins
6. 6.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds are magnetic (c) folds make it wet (d) folds add glue
7. 7.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
8. 8.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) a bridge truss (c) an eggshell (d) a hollow bird bone
9. 9.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a temple dome (c) a roof frame (d) an old stone bridge
10. 10.🔍 Which is the odd one out? (a) a wet flat sheet (b) a zigzag-folded sheet (c) a U-shaped channel (d) rolled paper tubes
11. 11.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
12. 12.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a hollow bird bone (c) an electric tower (d) an eggshell
13. 13.⚖️ 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
14. 14.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a wet flat sheet (c) a flat tissue (d) a zigzag-folded sheet
15. 15.🏗️ Where does a hollow bird bone get its strength from? (a) tubes (b) triangles (c) arches and domes
16. 16.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) fewer coins (c) the same coins (d) only water
17. 17.🧺 Which of these is not needed for the paper bridge? (a) a battery cell (b) a ruler (c) sheets of paper (d) two books
18. 18.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is made of steel (c) it is magnetic (d) its curved arch shape
19. 19.🧺 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
20. 20.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) two books (c) sheets of paper (d) a ruler
21. 21.🧺 Which of these is not needed for the paper bridge? (a) two books (b) yeast (c) coins (d) sheets of paper
22. 22.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) not at all (c) upward (d) more
24. 24.🔍 Which is the odd one out? (a) rolled paper tubes (b) a torn flat sheet (c) a wet flat sheet (d) one flat sheet
25. 25.True or false: one flat sheet makes a weak bridge. (a) False (b) True
26. 26.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) True (b) False
27. 27.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a mirror (c) a battery cell (d) a ruler
28. 28.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
29. 29.True or false: a balloon is needed for the paper bridge. (a) False (b) True
30. 30.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
31. 31.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
32. 32.⚖️ 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 change it (c) we measure it
33. 33.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
34. 34.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) one flat sheet (c) paper with folded edges (d) a U-shaped channel
35. 35.True or false: a flat tissue makes a strong bridge. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the paper bridge? (a) coins (b) sheets of paper (c) a ruler (d) turmeric powder
38. 38.🔺 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
39. 39.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) coins it holds (b) the gap between books (c) the shape of the paper (d) the kind of paper
40. 40.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) turmeric powder (d) two books

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