Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 314 · 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) wash your hands (c) skip washing (d) lick your fingers
2. 2.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) arches and domes (c) tubes
3. 3.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) yeast (c) a magnet (d) a ruler
4. 4.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
5. 5.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
6. 6.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of paper (b) the kind of coins (c) the shape of the paper (d) where coins are placed
7. 7.True or false: coins is needed for the paper bridge. (a) True (b) False
8. 8.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a magnet (c) coins (d) two books
9. 9.🏗️ Which of these gets its strength from arches or domes? (a) a hollow bird bone (b) an electric tower (c) a temple dome (d) a roof frame
10. 10.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
11. 11.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds make it wet (c) folds add glue (d) folds are magnetic
12. 12.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) False (b) True
13. 13.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a ruler (d) a mirror
14. 14.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (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? True or false: the gap between books is what we measure. (a) True (b) False
16. 16.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
17. 17.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
18. 18.True or false: a hollow bird bone gets its strength from triangles. (a) False (b) True
19. 19.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.True or false: a wet flat sheet makes a weak bridge. (a) False (b) True
21. 21.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a bamboo pole (c) an old stone bridge (d) a bridge truss
22. 22.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the gap between books (c) the shape of the paper
23. 23.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) low and steady (c) on top of a pet (d) high and wobbly
24. 24.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) upward (c) less (d) not at all
25. 25.🔍 Which is the odd one out? (a) a U-shaped channel (b) a zigzag-folded sheet (c) a flat tissue (d) rolled paper tubes
26. 26.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a ruler (d) a battery cell
27. 27.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) fewer coins (c) more coins (d) only water
28. 28.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) rolled paper tubes (b) one flat sheet (c) a zigzag-folded sheet (d) paper with folded edges
30. 30.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the shape of the paper (c) where coins are placed
31. 31.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the kind of coins (c) the shape of the paper
32. 32.⚖️ 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
33. 33.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) one flat sheet (c) a U-shaped channel (d) rolled paper tubes
34. 34.True or false: an electric tower gets its strength from triangles. (a) True (b) False
35. 35.True or false: one flat sheet makes a strong bridge. (a) False (b) True
36. 36.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
37. 37.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
38. 38.🏗️ Which of these gets its strength from arches or domes? (a) an eggshell (b) a bamboo pole (c) a bridge truss (d) a roof frame
39. 39.🔺 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
40. 40.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is the one thing we change. (a) True (b) False

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