Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 655 · 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.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) lick your fingers (c) wash your hands (d) skip washing
2. 2.🔍 Which is the odd one out? (a) paper with folded edges (b) a flat tissue (c) a zigzag-folded sheet (d) rolled paper tubes
3. 3.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) upward (c) not at all (d) more
4. 4.🏗️ Where does a bamboo pole get its strength from? (a) arches and domes (b) tubes (c) triangles
5. 5.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) fewer coins (d) the same coins
6. 6.🔺 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
7. 7.🧺 Which of these is needed for the paper bridge? (a) a ruler (b) turmeric powder (c) a battery cell (d) a balloon
8. 8.⚖️ 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) coins it holds (d) the shape of the paper
9. 9.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
10. 10.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a magnet (c) sheets of paper (d) a ruler
11. 11.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) where coins are placed (c) the shape of the paper (d) coins it holds
12. 12.🔍 Which is the odd one out? (a) a torn flat sheet (b) a zigzag-folded sheet (c) rolled paper tubes (d) paper with folded edges
13. 13.🔍 Which is the odd one out? (a) rolled paper tubes (b) one flat sheet (c) a zigzag-folded sheet (d) a U-shaped channel
14. 14.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) sheets of paper (c) a mirror (d) a balloon
15. 15.True or false: a mirror is needed for the paper bridge. (a) True (b) False
16. 16.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds add glue (c) folds make it wet (d) folds are magnetic
17. 17.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) a U-shaped channel (d) a torn flat sheet
18. 18.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) paper with folded edges (d) one flat sheet
19. 19.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) fewer (c) more (d) the same number of
20. 20.True or false: a ruler is needed for the paper bridge. (a) False (b) True
21. 21.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) True (b) False
22. 22.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
23. 23.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
24. 24.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) two books (c) a battery cell (d) sheets of paper
26. 26.🔍 Which is the odd one out? (a) a flat tissue (b) rolled paper tubes (c) a wet flat sheet (d) one flat sheet
27. 27.🏗️ Which of these gets its strength from a tube shape? (a) an electric tower (b) an old stone bridge (c) a roof frame (d) a bamboo pole
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) yeast (d) a ruler
29. 29.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) triangles (c) arches and domes
30. 30.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) an eggshell (c) an electric tower (d) a bamboo pole
31. 31.⚖️ 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
32. 32.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it sags and falls (c) it turns to card (d) it floats up
33. 33.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) low and steady (d) on a stool edge
34. 34.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a ruler (c) a mirror (d) two books
35. 35.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
36. 36.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
37. 37.True or false: yeast is needed for the paper bridge. (a) False (b) True
38. 38.True or false: coins is needed for the paper bridge. (a) True (b) False
39. 39.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
40. 40.⚖️ 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

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