Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 422 · 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.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the shape of the paper (b) where coins are placed (c) the gap between books (d) the kind of paper
2. 2.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a battery cell (c) sheets of paper (d) a ruler
3. 3.True or false: coins is not needed for the paper bridge. (a) True (b) False
4. 4.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a ruler (d) a balloon
5. 5.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) the same number of (c) zero (d) more
6. 6.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the gap between books (c) coins it holds
7. 7.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it stiffer (c) folds make it wet (d) folds are magnetic
8. 8.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
9. 9.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) rub your eyes (d) wash your hands
10. 10.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) one flat sheet (c) rolled paper tubes (d) a zigzag-folded sheet
11. 11.🔍 Which is the odd one out? (a) one flat sheet (b) paper with folded edges (c) a flat tissue (d) a wet flat sheet
12. 12.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) more coins (c) only water (d) the same coins
13. 13.True or false: a wet flat sheet makes a weak bridge. (a) True (b) False
14. 14.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) paper with folded edges (c) a wet flat sheet (d) rolled paper tubes
15. 15.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
16. 16.⚖️ 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
17. 17.True or false: a bridge truss gets its strength from arches or domes. (a) True (b) False
18. 18.True or false: a magnet is not needed for the paper bridge. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a U-shaped channel (b) a zigzag-folded sheet (c) a flat tissue (d) rolled paper tubes
20. 20.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) arches and domes (c) tubes
21. 21.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) upward (c) more (d) not at all
23. 23.🏗️ Where does an eggshell get its strength from? (a) triangles (b) tubes (c) arches and domes
24. 24.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) on top of a pet (c) high and wobbly (d) on a stool edge
25. 25.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
26. 26.True or false: an electric tower gets its strength from a tube shape. (a) True (b) False
27. 27.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
28. 28.🏗️ Which of these gets its strength from triangles? (a) a bamboo pole (b) a bridge truss (c) a round pillar (d) a temple dome
29. 29.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the paper bridge? (a) two books (b) coins (c) yeast (d) sheets of paper
31. 31.⚖️ 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
32. 32.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) True (b) False
33. 33.🏗️ Which of these gets its strength from arches or domes? (a) a temple dome (b) a round pillar (c) a roof frame (d) a bridge truss
34. 34.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) where coins are placed (b) coins it holds (c) the gap between books (d) the kind of coins
35. 35.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is very hot (c) it is magnetic (d) its curved arch shape
36. 36.True or false: two books is needed for the paper bridge. (a) False (b) True
37. 37.🏗️ Which of these gets its strength from a tube shape? (a) an old stone bridge (b) an eggshell (c) a roof frame (d) a hollow bird bone
38. 38.True or false: a balloon is not needed for the paper bridge. (a) True (b) False
39. 39.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) tubes (c) arches and domes
40. 40.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the heart shape (c) the star (d) the square

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