Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 861 · 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.True or false: a ruler is needed for the paper bridge. (a) True (b) False
2. 2.True or false: turmeric powder is needed for the paper bridge. (a) False (b) True
3. 3.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) a torn flat sheet (c) a zigzag-folded sheet (d) rolled paper tubes
4. 4.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the star (b) the heart shape (c) the triangle (d) the square
5. 5.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
6. 6.True or false: a ruler is not needed for the paper bridge. (a) False (b) True
7. 7.True or false: rolled paper tubes makes a strong bridge. (a) False (b) True
8. 8.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
9. 9.🏗️ Which of these gets its strength from triangles? (a) a bridge truss (b) a bamboo pole (c) an eggshell (d) an old stone bridge
10. 10.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🌉 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
12. 12.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) on a stool edge (c) low and steady (d) high and wobbly
13. 13.True or false: an electric tower gets its strength from a tube shape. (a) True (b) False
14. 14.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) upward (c) not at all (d) more
15. 15.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) the same number of (c) more (d) zero
16. 16.🔍 Which is the odd one out? (a) a flat tissue (b) one flat sheet (c) a zigzag-folded sheet (d) a wet flat sheet
17. 17.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a roof frame (c) a bamboo pole (d) a round pillar
18. 18.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
19. 19.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
20. 20.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) one flat sheet (c) a torn flat sheet (d) a U-shaped channel
21. 21.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) yeast (c) two books (d) coins
22. 22.True or false: a torn flat sheet makes a weak bridge. (a) True (b) False
23. 23.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) paper with folded edges (c) a wet flat sheet (d) one flat sheet
24. 24.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) its curved arch shape (c) it is very hot (d) it is made of steel
25. 25.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🧺 Which of these is not needed for the paper bridge? (a) a magnet (b) sheets of paper (c) coins (d) two books
27. 27.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) triangles (c) tubes
28. 28.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a torn flat sheet (c) one flat sheet (d) a zigzag-folded sheet
29. 29.True or false: an old stone bridge gets its strength from triangles. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) rolled paper tubes (b) a U-shaped channel (c) a zigzag-folded sheet (d) one flat sheet
31. 31.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) a torn flat sheet (d) paper with folded edges
32. 32.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
33. 33.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) fewer coins (c) the same coins (d) only water
34. 34.🏗️ Where does a bamboo pole get its strength from? (a) triangles (b) arches and domes (c) tubes
35. 35.⚖️ 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
36. 36.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
37. 37.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a temple dome (c) a bamboo pole (d) an old stone bridge
38. 38.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) an eggshell (c) a hollow bird bone (d) an electric tower
39. 39.True or false: a bridge truss gets its strength from arches or domes. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) a U-shaped channel (c) a torn flat sheet (d) paper with folded edges

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