Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 236 · 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.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) the same coins (c) more coins (d) only water
2. 2.True or false: an eggshell gets its strength from arches or domes. (a) False (b) True
3. 3.🛟 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
4. 4.True or false: an old stone bridge gets its strength from arches or domes. (a) False (b) True
5. 5.🏗️ Which of these gets its strength from a tube shape? (a) a hollow bird bone (b) an old stone bridge (c) a temple dome (d) a bridge truss
6. 6.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
7. 7.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) False (b) True
8. 8.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
9. 9.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is very hot (c) it is made of steel (d) it is magnetic
10. 10.🔍 Which is the odd one out? (a) a flat tissue (b) one flat sheet (c) a U-shaped channel (d) a torn flat sheet
11. 11.🔍 Which is the odd one out? (a) a wet flat sheet (b) a torn flat sheet (c) a flat tissue (d) rolled paper tubes
12. 12.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) high and wobbly (c) on top of a pet (d) on a stool edge
13. 13.🔮 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
14. 14.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) triangles (c) tubes
15. 15.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) coins it holds (c) the shape of the paper (d) where coins are placed
16. 16.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a ruler (c) yeast (d) sheets of paper
17. 17.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds add glue (c) folds make it stiffer (d) folds make it wet
18. 18.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the heart shape (c) the star (d) the triangle
20. 20.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) a mirror (d) coins
21. 21.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) zero (d) more
22. 22.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
23. 23.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🏗️ Where does a hollow bird bone get its strength from? (a) tubes (b) arches and domes (c) triangles
25. 25.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it sags and falls (c) it gets stronger (d) it floats up
26. 26.🔍 Which is the odd one out? (a) a U-shaped channel (b) a wet flat sheet (c) rolled paper tubes (d) a zigzag-folded sheet
27. 27.🧺 Which of these is not needed for the paper bridge? (a) two books (b) sheets of paper (c) turmeric powder (d) coins
28. 28.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a balloon (c) sheets of paper (d) two books
30. 30.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a bridge truss (c) an eggshell (d) a round pillar
32. 32.True or false: a bamboo pole gets its strength from a tube shape. (a) False (b) True
33. 33.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a magnet (c) a balloon (d) sheets of paper
34. 34.True or false: two books is needed for the paper bridge. (a) False (b) True
35. 35.True or false: a magnet is not needed for the paper bridge. (a) True (b) False
36. 36.True or false: a hollow bird bone gets its strength from a tube shape. (a) False (b) True
37. 37.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) rolled paper tubes (c) a U-shaped channel (d) one flat sheet
39. 39.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) coins (c) sheets of paper (d) two books
40. 40.🔍 Which is the odd one out? (a) paper with folded edges (b) a U-shaped channel (c) a zigzag-folded sheet (d) a flat tissue

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