Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 387 · 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.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
2. 2.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) the kind of coins (c) where coins are placed (d) the shape of the paper
3. 3.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) high and wobbly (c) on top of a pet (d) on a stool edge
4. 4.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) not at all (c) more (d) upward
5. 5.True or false: a battery cell is not needed for the paper bridge. (a) False (b) True
6. 6.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the kind of paper (b) coins it holds (c) the shape of the paper
7. 7.🔍 Which is the odd one out? (a) paper with folded edges (b) rolled paper tubes (c) a torn flat sheet (d) a U-shaped channel
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a ruler (c) turmeric powder (d) two books
10. 10.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the triangle (c) the heart shape (d) the star
11. 11.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) a balloon (c) two books (d) yeast
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) a temple dome (c) an electric tower (d) a hollow bird bone
15. 15.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a battery cell (b) two books (c) coins (d) sheets of paper
16. 16.True or false: two books is not needed for the paper bridge. (a) True (b) False
17. 17.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
18. 18.True or false: a torn flat sheet makes a strong bridge. (a) True (b) False
19. 19.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
20. 20.True or false: an eggshell gets its strength from a tube shape. (a) True (b) False
21. 21.True or false: a roof frame gets its strength from a tube shape. (a) True (b) False
22. 22.🧺 Which of these is not needed for the paper bridge? (a) two books (b) coins (c) sheets of paper (d) yeast
23. 23.🔍 Which is the odd one out? (a) a U-shaped channel (b) a flat tissue (c) a wet flat sheet (d) a torn flat sheet
24. 24.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds are magnetic (c) folds add glue (d) folds make it stiffer
25. 25.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
26. 26.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) a torn flat sheet (d) a zigzag-folded sheet
27. 27.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) zero (d) fewer
28. 28.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
30. 30.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) False (b) True
31. 31.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a bridge truss (c) an old stone bridge (d) a round pillar
32. 32.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
33. 33.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a wet flat sheet (c) rolled paper tubes (d) a flat tissue
34. 34.True or false: a temple dome gets its strength from a tube shape. (a) True (b) False
35. 35.🧺 Do we need turmeric powder for the paper bridge? (a) not needed (b) needed
36. 36.True or false: sheets of paper is not needed for the paper bridge. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a wet flat sheet (b) paper with folded edges (c) one flat sheet (d) a torn flat sheet
38. 38.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a wet flat sheet (c) rolled paper tubes (d) a zigzag-folded sheet
39. 39.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) it is made of steel (d) its curved arch shape
40. 40.🏗️ Which of these gets its strength from triangles? (a) a round pillar (b) a temple dome (c) an electric tower (d) an eggshell

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