Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 42 · 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.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) less (c) not at all (d) upward
2. 2.True or false: a hollow bird bone gets its strength from arches or domes. (a) True (b) False
3. 3.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
4. 4.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
5. 5.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a battery cell (c) yeast (d) coins
6. 6.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
7. 7.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
8. 8.True or false: a roof frame gets its strength from a tube shape. (a) False (b) True
9. 9.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
10. 10.⚖️ 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
11. 11.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is magnetic (c) its curved arch shape (d) it is very hot
12. 12.🏗️ Which of these gets its strength from a tube shape? (a) a temple dome (b) an eggshell (c) a bamboo pole (d) a roof frame
13. 13.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
14. 14.🏗️ Where does a round pillar get its strength from? (a) arches and domes (b) tubes (c) triangles
15. 15.🔍 Which is the odd one out? (a) a wet flat sheet (b) rolled paper tubes (c) one flat sheet (d) a flat tissue
16. 16.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) coins (c) sheets of paper (d) two books
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) two books (d) turmeric powder
18. 18.🧺 Which of these is not needed for the paper bridge? (a) yeast (b) two books (c) coins (d) sheets of paper
19. 19.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
20. 20.🌉 Which of these makes a weak bridge? (a) a flat tissue (b) paper with folded edges (c) rolled paper tubes (d) a U-shaped channel
21. 21.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) the same coins (d) fewer coins
22. 22.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
23. 23.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
24. 24.True or false: a bridge truss gets its strength from triangles. (a) True (b) False
25. 25.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) False (b) True
26. 26.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
27. 27.True or false: a U-shaped channel makes a strong bridge. (a) True (b) False
28. 28.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) where coins are placed (b) the kind of coins (c) the kind of paper (d) coins it holds
29. 29.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
30. 30.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) coins (d) yeast
31. 31.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) coins (c) a balloon (d) two books
32. 32.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it turns to card (c) it sags and falls (d) it gets stronger
33. 33.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) a roof frame (c) an old stone bridge (d) a round pillar
34. 34.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) lick your fingers (c) skip washing (d) rub your eyes
35. 35.🧺 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) two books
36. 36.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
37. 37.True or false: a wet flat sheet makes a strong bridge. (a) True (b) False
38. 38.🔺 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
39. 39.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a mirror (c) sheets of paper (d) coins
40. 40.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) on top of a pet (c) high and wobbly (d) on a stool edge

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