Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 839 · 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 does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it stiffer (d) folds make it wet
2. 2.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) low and steady (d) high and wobbly
3. 3.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
4. 4.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) two books (d) a battery cell
5. 5.True or false: coins is needed for the paper bridge. (a) False (b) True
6. 6.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is what we measure. (a) True (b) False
7. 7.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) a zigzag-folded sheet (c) a wet flat sheet (d) rolled paper tubes
8. 8.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) the same coins (c) more coins (d) fewer coins
9. 9.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
10. 10.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) a bamboo pole (c) a temple dome (d) a bridge truss
11. 11.⚖️ 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
12. 12.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) a mirror (d) coins
14. 14.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a wet flat sheet (b) a U-shaped channel (c) a zigzag-folded sheet (d) paper with folded edges
16. 16.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
17. 17.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
18. 18.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) its curved arch shape (c) it is magnetic (d) it is made of steel
19. 19.True or false: a bridge truss gets its strength from triangles. (a) True (b) False
20. 20.🧺 Which of these is not needed for the paper bridge? (a) two books (b) coins (c) a ruler (d) a magnet
21. 21.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the heart shape (b) the square (c) the triangle (d) the star
22. 22.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a ruler (d) a magnet
23. 23.🏗️ Where does a bamboo pole get its strength from? (a) arches and domes (b) tubes (c) triangles
24. 24.🔍 Which is the odd one out? (a) a torn flat sheet (b) a flat tissue (c) a zigzag-folded sheet (d) a wet flat sheet
25. 25.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) the kind of paper (c) the shape of the paper (d) the kind of coins
26. 26.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
27. 27.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) rub your eyes (c) skip washing (d) wash your hands
28. 28.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
29. 29.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
30. 30.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
32. 32.True or false: an eggshell gets its strength from arches or domes. (a) False (b) True
33. 33.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
34. 34.🏗️ Where does a roof frame get its strength from? (a) triangles (b) arches and domes (c) tubes
35. 35.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) coins it holds (c) the gap between books
36. 36.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
37. 37.🏗️ Where does a temple dome get its strength from? (a) triangles (b) arches and domes (c) tubes
38. 38.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) a magnet (c) a battery cell (d) sheets of paper
39. 39.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) the same number of (c) more (d) fewer
40. 40.🔍 Which is the odd one out? (a) one flat sheet (b) a torn flat sheet (c) paper with folded edges (d) a flat tissue

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