Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 826 · 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) the same coins (b) more coins (c) only water (d) fewer coins
2. 2.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of paper (b) coins it holds (c) where coins are placed (d) the shape of the paper
3. 3.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds are magnetic (d) folds make it stiffer
4. 4.🔍 Which is the odd one out? (a) a wet flat sheet (b) a zigzag-folded sheet (c) a torn flat sheet (d) one flat sheet
5. 5.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) a balloon (d) two books
6. 6.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) a bridge truss (c) an old stone bridge (d) a hollow bird bone
7. 7.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a mirror (b) coins (c) sheets of paper (d) two books
8. 8.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
9. 9.True or false: yeast is needed for the paper bridge. (a) False (b) True
10. 10.True or false: an eggshell gets its strength from arches or domes. (a) False (b) True
11. 11.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it turns to card (c) it gets stronger (d) it floats up
12. 12.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) high and wobbly (c) on a stool edge (d) low and steady
13. 13.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
14. 14.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
15. 15.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) an eggshell (c) a round pillar (d) a bridge truss
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) a flat tissue (b) rolled paper tubes (c) a U-shaped channel (d) a zigzag-folded sheet
18. 18.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
19. 19.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
20. 20.🔺 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
21. 21.⚖️ 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
22. 22.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
24. 24.🏗️ Which of these gets its strength from a tube shape? (a) a round pillar (b) an electric tower (c) a roof frame (d) an old stone bridge
25. 25.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) yeast (b) a ruler (c) coins (d) two books
26. 26.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) triangles (c) tubes
27. 27.🥚 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 made of steel (d) it is very hot
28. 28.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
29. 29.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) a hollow bird bone (c) an old stone bridge (d) a bridge truss
30. 30.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) a flat tissue (d) paper with folded edges
31. 31.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) fewer (c) the same number of (d) more
32. 32.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) the kind of coins (c) coins it holds (d) the gap between books
33. 33.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a magnet (c) sheets of paper (d) two books
34. 34.True or false: a balloon is needed for the paper bridge. (a) False (b) True
35. 35.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
36. 36.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
37. 37.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) turmeric powder (d) two books
38. 38.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
39. 39.True or false: an old stone bridge gets its strength from arches or domes. (a) False (b) True
40. 40.⚖️ 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

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