Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 717 · 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.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it gets stronger (c) it turns to card (d) it floats up
2. 2.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) a torn flat sheet (d) a zigzag-folded sheet
3. 3.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) coins (c) sheets of paper (d) a battery cell
4. 4.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the kind of coins (c) coins it holds
5. 5.🏗️ Where does a round pillar get its strength from? (a) triangles (b) arches and domes (c) tubes
6. 6.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) False (b) True
7. 7.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a U-shaped channel (b) a flat tissue (c) a wet flat sheet (d) one flat sheet
9. 9.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) True (b) False
10. 10.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) triangles (c) tubes
11. 11.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) sheets of paper (d) a magnet
12. 12.🏗️ Where does a hollow bird bone get its strength from? (a) arches and domes (b) triangles (c) tubes
13. 13.True or false: a temple dome gets its strength from triangles. (a) False (b) True
14. 14.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the star (c) the heart shape (d) the triangle
15. 15.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
16. 16.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.True or false: a round pillar gets its strength from a tube shape. (a) True (b) False
18. 18.True or false: a wet flat sheet makes a weak bridge. (a) False (b) True
19. 19.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
20. 20.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it wet (d) folds make it stiffer
21. 21.🔍 Which is the odd one out? (a) a torn flat sheet (b) paper with folded edges (c) a U-shaped channel (d) a zigzag-folded sheet
22. 22.True or false: a roof frame gets its strength from triangles. (a) True (b) False
23. 23.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on a stool edge (c) on top of a pet (d) low and steady
25. 25.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) triangles (c) tubes
26. 26.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a hollow bird bone (c) a roof frame (d) a round pillar
27. 27.🔍 Which is the odd one out? (a) a flat tissue (b) a torn flat sheet (c) paper with folded edges (d) one flat sheet
28. 28.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a mirror (b) two books (c) coins (d) a ruler
30. 30.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
31. 31.True or false: a flat tissue makes a strong bridge. (a) False (b) True
32. 32.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a wet flat sheet (c) a flat tissue (d) a U-shaped channel
33. 33.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a flat tissue (c) a zigzag-folded sheet (d) paper with folded edges
34. 34.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) the same number of (c) fewer (d) zero
35. 35.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
36. 36.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
37. 37.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) where coins are placed (b) the kind of paper (c) the shape of the paper (d) coins it holds
38. 38.🔍 Which is the odd one out? (a) a wet flat sheet (b) a zigzag-folded sheet (c) rolled paper tubes (d) a U-shaped channel
39. 39.True or false: coins 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 shape of the paper”? (a) we measure it (b) we keep it the same (c) we change it

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