Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 72 · 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.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is magnetic (c) it is very hot (d) it is made of steel
2. 2.True or false: an electric tower gets its strength from triangles. (a) False (b) True
3. 3.True or false: a temple dome gets its strength from triangles. (a) True (b) False
4. 4.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) fewer coins (c) only water (d) the same coins
5. 5.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) paper with folded edges (c) a U-shaped channel (d) one flat sheet
6. 6.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) more (d) zero
7. 7.🌉 Which of these makes a weak bridge? (a) a flat tissue (b) a zigzag-folded sheet (c) paper with folded edges (d) rolled paper tubes
8. 8.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
9. 9.🧺 Which of these is not needed for the paper bridge? (a) coins (b) sheets of paper (c) a magnet (d) two books
10. 10.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
11. 11.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) coins it holds (b) the shape of the paper (c) the gap between books (d) the kind of coins
12. 12.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
13. 13.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) a flat tissue (c) a wet flat sheet (d) one flat sheet
16. 16.True or false: sheets of paper is needed for the paper bridge. (a) True (b) False
17. 17.🛟 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
18. 18.True or false: coins is not needed for the paper bridge. (a) True (b) False
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) coins (d) a battery cell
20. 20.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the square (c) the heart shape (d) the star
22. 22.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) two books (d) a magnet
24. 24.🔍 Which is the odd one out? (a) paper with folded edges (b) rolled paper tubes (c) a U-shaped channel (d) a wet flat sheet
25. 25.True or false: turmeric powder is not needed for the paper bridge. (a) False (b) True
26. 26.🏗️ Where does a round pillar get its strength from? (a) arches and domes (b) tubes (c) triangles
27. 27.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) upward (c) less (d) more
28. 28.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a magnet (c) sheets of paper (d) a battery cell
29. 29.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) False (b) True
31. 31.🧺 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
32. 32.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) triangles (c) tubes
33. 33.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds are magnetic (c) folds make it stiffer (d) folds add glue
34. 34.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
35. 35.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) triangles (c) arches and domes
36. 36.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a balloon (c) sheets of paper (d) a ruler
37. 37.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
38. 38.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) the kind of coins (c) the kind of paper (d) coins it holds
39. 39.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
40. 40.🏗️ Which of these gets its strength from triangles? (a) a temple dome (b) an eggshell (c) a round pillar (d) a bridge truss

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