Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 909 · 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.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
2. 2.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it stiffer (d) folds make it wet
3. 3.True or false: a mirror is not needed for the paper bridge. (a) False (b) True
4. 4.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🏗️ Which of these gets its strength from arches or domes? (a) an eggshell (b) a roof frame (c) an electric tower (d) a round pillar
6. 6.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) paper with folded edges (c) a zigzag-folded sheet (d) one flat sheet
7. 7.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) sheets of paper (c) a ruler (d) two books
8. 8.True or false: yeast is not needed for the paper bridge. (a) True (b) False
9. 9.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) rub your eyes (c) skip washing (d) lick your fingers
10. 10.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) triangles (c) arches and domes
11. 11.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) only water (c) the same coins (d) more coins
12. 12.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) its curved arch shape (d) it is made of steel
13. 13.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
14. 14.🏗️ Where does a round pillar get its strength from? (a) triangles (b) arches and domes (c) tubes
15. 15.True or false: a hollow bird bone gets its strength from a tube shape. (a) False (b) True
16. 16.🧺 Which of these is not needed for the paper bridge? (a) a battery cell (b) two books (c) sheets of paper (d) a ruler
17. 17.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is kept the same. (a) False (b) True
18. 18.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the shape of the paper (b) the kind of coins (c) where coins are placed (d) coins it holds
19. 19.🧺 Which of these is needed for the paper bridge? (a) coins (b) a magnet (c) yeast (d) a battery cell
20. 20.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
21. 21.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) turmeric powder (d) a ruler
22. 22.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
23. 23.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a hollow bird bone (c) an old stone bridge (d) a roof frame
24. 24.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
26. 26.True or false: an eggshell gets its strength from a tube shape. (a) True (b) False
27. 27.True or false: an old stone bridge gets its strength from arches or domes. (a) False (b) True
28. 28.⚖️ 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
29. 29.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
30. 30.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
31. 31.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) zero (c) fewer (d) the same number of
32. 32.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
33. 33.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) a zigzag-folded sheet (c) paper with folded edges (d) a wet flat sheet
34. 34.🔍 Which is the odd one out? (a) a wet flat sheet (b) a torn flat sheet (c) one flat sheet (d) a zigzag-folded sheet
35. 35.🔍 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 gets stronger (d) it floats up
36. 36.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
37. 37.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a roof frame (c) a temple dome (d) an electric tower
38. 38.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) sheets of paper (d) yeast
39. 39.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the gap between books (c) the shape of the paper
40. 40.True or false: coins is not needed for the paper bridge. (a) False (b) True

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