Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 779 · 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.True or false: one flat sheet makes a strong bridge. (a) False (b) True
2. 2.True or false: a wet flat sheet makes a weak bridge. (a) False (b) True
3. 3.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) the same coins (d) fewer coins
4. 4.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
5. 5.True or false: a magnet is needed for the paper bridge. (a) True (b) False
6. 6.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
7. 7.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a bridge truss (c) a temple dome (d) a round pillar
8. 8.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
9. 9.True or false: a roof frame gets its strength from triangles. (a) True (b) False
10. 10.🏗️ Where does a round pillar get its strength from? (a) tubes (b) arches and domes (c) triangles
11. 11.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
12. 12.True or false: yeast is needed for the paper bridge. (a) False (b) True
13. 13.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) zero (c) more (d) fewer
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a battery cell (b) sheets of paper (c) coins (d) a ruler
16. 16.⚖️ 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
17. 17.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a torn flat sheet (c) a zigzag-folded sheet (d) rolled paper tubes
18. 18.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of paper (b) the shape of the paper (c) the kind of coins (d) the gap between books
19. 19.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a round pillar (c) a hollow bird bone (d) an electric tower
20. 20.🛟 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
21. 21.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
22. 22.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) rub your eyes (c) skip washing (d) wash your hands
24. 24.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the kind of paper (c) coins it holds
25. 25.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) coins it holds (c) the shape of the paper (d) the kind of paper
26. 26.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) upward (c) not at all (d) less
27. 27.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
28. 28.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) True (b) False
29. 29.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it stiffer (c) folds add glue (d) folds make it wet
30. 30.🏗️ Where does an eggshell get its strength from? (a) arches and domes (b) triangles (c) tubes
31. 31.True or false: a roof frame gets its strength from arches or domes. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) rolled paper tubes (c) a U-shaped channel (d) a torn flat sheet
33. 33.True or false: paper with folded edges makes a strong bridge. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) paper with folded edges (c) a wet flat sheet (d) rolled paper tubes
35. 35.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the heart shape (c) the triangle (d) the star
36. 36.True or false: an old stone bridge gets its strength from arches or domes. (a) False (b) True
37. 37.🏗️ Where does an electric tower get its strength from? (a) tubes (b) arches and domes (c) triangles
38. 38.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
39. 39.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a U-shaped channel (c) rolled paper tubes (d) one flat sheet
40. 40.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge

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