Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 721 · 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? True or false: the shape of the paper is kept the same. (a) False (b) True
2. 2.⚖️ 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
3. 3.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) zero (d) fewer
4. 4.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
5. 5.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) on a stool edge (d) low and steady
6. 6.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a hollow bird bone (c) a roof frame (d) an eggshell
7. 7.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds are magnetic (c) folds make it wet (d) folds add glue
8. 8.True or false: a bridge truss gets its strength from a tube shape. (a) False (b) True
9. 9.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is very hot (c) its curved arch shape (d) it is made of steel
10. 10.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) one flat sheet (c) rolled paper tubes (d) a zigzag-folded sheet
12. 12.🔍 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 floats up (d) it gets stronger
13. 13.⚖️ 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 gap between books
14. 14.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) paper with folded edges (c) a zigzag-folded sheet (d) a wet flat sheet
15. 15.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) a flat tissue (b) paper with folded edges (c) rolled paper tubes (d) a U-shaped channel
17. 17.True or false: an eggshell gets its strength from triangles. (a) True (b) False
18. 18.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a magnet (c) a battery cell (d) a ruler
19. 19.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) a flat tissue (d) paper with folded edges
20. 20.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) turmeric powder (c) a ruler (d) coins
21. 21.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) a mirror (c) coins (d) sheets of paper
23. 23.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) where coins are placed (c) coins it holds
24. 24.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) the same coins (c) only water (d) more coins
25. 25.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
26. 26.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) one flat sheet (c) a torn flat sheet (d) a U-shaped channel
28. 28.⚖️ 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) the shape of the paper (d) the kind of coins
29. 29.True or false: a flat tissue makes a strong bridge. (a) True (b) False
30. 30.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) tubes (c) triangles
31. 31.🛟 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
32. 32.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
34. 34.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
35. 35.🏗️ Which of these gets its strength from arches or domes? (a) a hollow bird bone (b) an eggshell (c) an electric tower (d) a roof frame
36. 36.⚖️ 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
37. 37.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
38. 38.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) two books (c) a ruler (d) a balloon
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.🏗️ Which of these gets its strength from a tube shape? (a) an old stone bridge (b) a bridge truss (c) a temple dome (d) a bamboo pole

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