Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 649 · 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.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
2. 2.True or false: a torn flat sheet makes a strong bridge. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) a flat tissue (d) a zigzag-folded sheet
4. 4.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) yeast (b) a ruler (c) two books (d) sheets of paper
5. 5.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) tubes (c) arches and domes
6. 6.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) only water (c) the same coins (d) fewer coins
7. 7.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
9. 9.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) upward (c) less (d) not at all
10. 10.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) False (b) True
11. 11.🧺 Do we need a ruler for the paper bridge? (a) needed (b) not needed
12. 12.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
13. 13.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
14. 14.🛟 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
15. 15.True or false: a balloon is not needed for the paper bridge. (a) True (b) False
16. 16.🏗️ Where does a round pillar get its strength from? (a) arches and domes (b) triangles (c) tubes
17. 17.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) rolled paper tubes (c) a torn flat sheet (d) one flat sheet
18. 18.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is what we measure. (a) True (b) False
19. 19.🌉 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
20. 20.True or false: one flat sheet makes a strong bridge. (a) True (b) False
21. 21.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is the one thing we change. (a) True (b) False
22. 22.🏗️ Where does an eggshell get its strength from? (a) arches and domes (b) triangles (c) tubes
23. 23.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) paper with folded edges (c) a flat tissue (d) a U-shaped channel
24. 24.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a flat tissue (c) a torn flat sheet (d) a U-shaped channel
25. 25.⚖️ 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 measure it (c) we change it
26. 26.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) two books (d) turmeric powder
27. 27.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) triangles (c) arches and domes
28. 28.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
29. 29.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
30. 30.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
31. 31.🧺 Which of these is needed for the paper bridge? (a) two books (b) turmeric powder (c) a magnet (d) yeast
32. 32.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it floats up (c) it turns to card (d) it sags and falls
33. 33.True or false: paper with folded edges makes a weak bridge. (a) False (b) True
34. 34.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is made of steel (c) it is very hot (d) its curved arch shape
35. 35.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
36. 36.🏗️ Where does a roof frame get its strength from? (a) triangles (b) tubes (c) arches and domes
37. 37.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
38. 38.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a round pillar (c) a hollow bird bone (d) a roof frame
39. 39.True or false: a balloon is needed for the paper bridge. (a) True (b) False
40. 40.True or false: rolled paper tubes makes a strong bridge. (a) False (b) True

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