Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 174 · 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: an old stone bridge gets its strength from triangles. (a) True (b) False
2. 2.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) where coins are placed (c) the kind of paper (d) the shape of the paper
3. 3.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a magnet (c) a ruler (d) sheets of paper
4. 4.🛟 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
5. 5.🔍 Which is the odd one out? (a) a torn flat sheet (b) a zigzag-folded sheet (c) a wet flat sheet (d) a flat tissue
6. 6.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is magnetic (c) it is very hot (d) its curved arch shape
7. 7.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
8. 8.🧺 Which of these is needed for the paper bridge? (a) a ruler (b) a balloon (c) a battery cell (d) yeast
9. 9.True or false: a temple dome gets its strength from a tube shape. (a) True (b) False
10. 10.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) triangles (c) tubes
11. 11.🌉 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
12. 12.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
13. 13.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
14. 14.🏗️ Where does an eggshell get its strength from? (a) triangles (b) arches and domes (c) tubes
15. 15.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
16. 16.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) a ruler (c) coins (d) two books
18. 18.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) two books (c) a battery cell (d) coins
20. 20.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
21. 21.🔺 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 triangle (d) the star
22. 22.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it gets stronger (c) it turns to card (d) it sags and falls
23. 23.True or false: a bamboo pole gets its strength from triangles. (a) True (b) False
24. 24.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) turmeric powder (d) coins
25. 25.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
26. 26.⚖️ 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
27. 27.True or false: a torn flat sheet makes a weak bridge. (a) True (b) False
28. 28.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.True or false: a U-shaped channel makes a weak bridge. (a) False (b) True
31. 31.True or false: a flat tissue makes a weak bridge. (a) True (b) False
32. 32.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) an eggshell (c) a round pillar (d) an electric tower
33. 33.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) arches and domes (c) tubes
34. 34.True or false: sheets of paper is not needed for the paper bridge. (a) True (b) False
35. 35.🧺 Which of these is needed for the paper bridge? (a) yeast (b) turmeric powder (c) coins (d) a balloon
36. 36.True or false: a ruler is needed for the paper bridge. (a) False (b) True
37. 37.True or false: an old stone bridge gets its strength from a tube shape. (a) True (b) False
38. 38.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
39. 39.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) less (c) upward (d) more
40. 40.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed

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