Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 464 · 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: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) less (c) upward (d) not at all
2. 2.🥚 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
3. 3.True or false: a U-shaped channel makes a strong bridge. (a) True (b) False
4. 4.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
5. 5.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
6. 6.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) where coins are placed (b) the kind of paper (c) coins it holds (d) the shape of the paper
7. 7.🏗️ Where does an electric tower get its strength from? (a) triangles (b) arches and domes (c) tubes
8. 8.⚖️ 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
9. 9.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) skip washing (c) lick your fingers (d) rub your eyes
10. 10.True or false: a balloon is needed for the paper bridge. (a) True (b) False
11. 11.True or false: a wet flat sheet makes a weak bridge. (a) False (b) True
12. 12.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the shape of the paper (c) the kind of paper
13. 13.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) False (b) True
14. 14.True or false: a flat tissue makes a weak bridge. (a) False (b) True
15. 15.True or false: two books is needed for the paper bridge. (a) True (b) False
16. 16.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) coins (d) a balloon
18. 18.🔍 Which is the odd one out? (a) a torn flat sheet (b) a zigzag-folded sheet (c) paper with folded edges (d) rolled paper tubes
19. 19.🛟 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
20. 20.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) triangles (c) arches and domes
21. 21.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) one flat sheet (c) a U-shaped channel (d) a flat tissue
22. 22.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) a bamboo pole (c) an electric tower (d) an eggshell
23. 23.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) True (b) False
24. 24.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) a roof frame (c) a bamboo pole (d) a temple dome
25. 25.True or false: turmeric powder is needed for the paper bridge. (a) True (b) False
26. 26.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
27. 27.True or false: a round pillar gets its strength from a tube shape. (a) True (b) False
28. 28.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) fewer (c) the same number of (d) zero
29. 29.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
30. 30.True or false: a round pillar gets its strength from triangles. (a) True (b) False
31. 31.True or false: a torn flat sheet makes a weak bridge. (a) False (b) True
32. 32.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the shape of the paper (c) where coins are placed
33. 33.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) coins (c) yeast (d) a magnet
35. 35.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a magnet (c) a ruler (d) two books
36. 36.True or false: a battery cell is needed for the paper bridge. (a) True (b) False
37. 37.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
38. 38.True or false: rolled paper tubes makes a strong bridge. (a) False (b) True
39. 39.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it wet (c) folds add glue (d) folds make it stiffer
40. 40.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed

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