Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 856 · 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.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) low and steady (c) on a stool edge (d) on top of a pet
2. 2.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) a flat tissue (d) rolled paper tubes
3. 3.True or false: yeast is not needed for the paper bridge. (a) False (b) True
4. 4.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) a magnet (c) a balloon (d) sheets of paper
5. 5.True or false: an electric tower gets its strength from triangles. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) one flat sheet (c) a U-shaped channel (d) rolled paper tubes
7. 7.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) its curved arch shape (c) it is made of steel (d) it is magnetic
8. 8.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is kept the same. (a) True (b) False
9. 9.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) where coins are placed (c) coins it holds
10. 10.🌉 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
11. 11.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) one flat sheet (c) a wet flat sheet (d) a U-shaped channel
12. 12.⚖️ 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 kind of coins (d) coins it holds
13. 13.🏗️ Which of these gets its strength from arches or domes? (a) a bamboo pole (b) a roof frame (c) a round pillar (d) an old stone bridge
14. 14.🔍 Which is the odd one out? (a) a torn flat sheet (b) one flat sheet (c) a U-shaped channel (d) a flat tissue
15. 15.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
16. 16.⚖️ 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
17. 17.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
18. 18.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
19. 19.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
20. 20.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) not at all (c) more (d) upward
21. 21.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) weak bridge (b) strong bridge
22. 22.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) more coins (c) the same coins (d) fewer coins
23. 23.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) rub your eyes (c) skip washing (d) wash your hands
24. 24.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a mirror (c) coins (d) two books
25. 25.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of coins (b) the kind of paper (c) the shape of the paper (d) the gap between books
26. 26.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it sags and falls (c) it gets stronger (d) it turns to card
27. 27.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) False (b) True
28. 28.True or false: a flat tissue makes a strong bridge. (a) True (b) False
29. 29.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a U-shaped channel (c) a wet flat sheet (d) a zigzag-folded sheet
30. 30.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
32. 32.🏗️ Where does a bamboo pole get its strength from? (a) arches and domes (b) triangles (c) tubes
33. 33.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a ruler (d) yeast
34. 34.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) a battery cell (c) a mirror (d) a ruler
35. 35.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
36. 36.True or false: an electric tower gets its strength from a tube shape. (a) True (b) False
37. 37.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) one flat sheet (c) a zigzag-folded sheet (d) rolled paper tubes
38. 38.🔍 Which is the odd one out? (a) a U-shaped channel (b) a zigzag-folded sheet (c) paper with folded edges (d) a torn flat sheet
39. 39.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a hollow bird bone (c) a bridge truss (d) a round pillar

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