Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 536 · 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: a bridge truss gets its strength from triangles. (a) True (b) False
2. 2.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
3. 3.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) a ruler (c) coins (d) two books
4. 4.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) less (c) more (d) upward
5. 5.True or false: a battery cell is not needed for the paper bridge. (a) True (b) False
6. 6.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
8. 8.🏗️ Where does a bridge truss get its strength from? (a) triangles (b) tubes (c) arches and domes
9. 9.True or false: a balloon is needed for the paper bridge. (a) False (b) True
10. 10.🧺 Which of these is not needed for the paper bridge? (a) two books (b) sheets of paper (c) coins (d) a mirror
11. 11.🏗️ Where does an electric tower get its strength from? (a) tubes (b) triangles (c) arches and domes
12. 12.True or false: a ruler is needed for the paper bridge. (a) True (b) False
13. 13.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) skip washing (c) rub your eyes (d) lick your fingers
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 measure it (c) we keep it the same
15. 15.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.True or false: an old stone bridge gets its strength from a tube shape. (a) True (b) False
17. 17.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) more coins (c) fewer coins (d) only water
18. 18.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
19. 19.True or false: a torn flat sheet makes a strong bridge. (a) True (b) False
20. 20.True or false: a mirror is not needed for the paper bridge. (a) False (b) True
21. 21.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
22. 22.🥚 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
23. 23.True or false: a bridge truss gets its strength from arches or domes. (a) True (b) False
24. 24.True or false: coins is not needed for the paper bridge. (a) True (b) False
25. 25.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it wet (c) folds make it stiffer (d) folds are magnetic
26. 26.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it floats up (c) it gets stronger (d) it turns to card
27. 27.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) weak bridge (b) strong bridge
28. 28.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) arches and domes (c) tubes
29. 29.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) more (d) zero
30. 30.🌉 Which of these makes a weak bridge? (a) one flat sheet (b) rolled paper tubes (c) paper with folded edges (d) a U-shaped channel
31. 31.True or false: an electric tower gets its strength from arches or domes. (a) True (b) False
32. 32.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) a ruler (c) yeast (d) turmeric powder
33. 33.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a bamboo pole (c) an electric tower (d) a round pillar
34. 34.🌉 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
35. 35.True or false: a roof frame gets its strength from a tube shape. (a) True (b) False
36. 36.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the star (c) the square (d) the heart shape
37. 37.True or false: a wet flat sheet makes a weak bridge. (a) False (b) True
38. 38.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a magnet (c) sheets of paper (d) coins
39. 39.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) the kind of paper (c) where coins are placed (d) the shape of the paper
40. 40.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) a bridge truss (c) a bamboo pole (d) a temple dome

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