Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 323 · 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.🌉 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
2. 2.True or false: yeast is not needed for the paper bridge. (a) True (b) False
3. 3.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a magnet (d) coins
4. 4.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a battery cell (c) sheets of paper (d) a mirror
5. 5.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
6. 6.True or false: a temple dome gets its strength from arches or domes. (a) True (b) False
7. 7.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
8. 8.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) coins it holds (c) the kind of coins
9. 9.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) the same coins (c) more coins (d) only water
10. 10.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) True (b) False
11. 11.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
12. 12.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
13. 13.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) the same number of (c) more (d) fewer
14. 14.🧺 Which of these is needed for the paper bridge? (a) a ruler (b) a battery cell (c) a balloon (d) a magnet
15. 15.🔍 Which is the odd one out? (a) a flat tissue (b) rolled paper tubes (c) a zigzag-folded sheet (d) paper with folded edges
16. 16.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
17. 17.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) the kind of paper (c) the shape of the paper (d) coins it holds
18. 18.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) low and steady (c) on a stool edge (d) high and wobbly
19. 19.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) a balloon (c) a magnet (d) coins
20. 20.True or false: turmeric powder is needed for the paper bridge. (a) False (b) True
21. 21.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🔍 Which is the odd one out? (a) a torn flat sheet (b) a U-shaped channel (c) a wet flat sheet (d) one flat sheet
23. 23.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) rolled paper tubes (c) a torn flat sheet (d) a zigzag-folded sheet
24. 24.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a battery cell (c) sheets of paper (d) coins
25. 25.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it gets stronger (c) it turns to card (d) it floats up
26. 26.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) tubes (c) arches and domes
27. 27.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) less (c) more (d) not at all
28. 28.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) a balloon (c) two books (d) a ruler
29. 29.True or false: one flat sheet makes a weak bridge. (a) True (b) False
30. 30.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) two books (d) yeast
31. 31.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) lick your fingers (c) skip washing (d) wash your hands
32. 32.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a roof frame (c) a hollow bird bone (d) an eggshell
33. 33.True or false: a bridge truss gets its strength from arches or domes. (a) True (b) False
34. 34.True or false: a mirror is needed for the paper bridge. (a) False (b) True
35. 35.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) False (b) True
36. 36.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
37. 37.True or false: a temple dome gets its strength from a tube shape. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: rolled paper tubes makes a strong bridge. (a) True (b) False
40. 40.🏗️ Which of these gets its strength from arches or domes? (a) a temple dome (b) a hollow bird bone (c) a bamboo pole (d) a bridge truss

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