Paper Bridge STEM Challenge Worksheet

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

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