Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 428 · 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.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a wet flat sheet (c) a zigzag-folded sheet (d) rolled paper tubes
2. 2.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it stiffer (c) folds make it wet (d) folds are magnetic
3. 3.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) tubes (c) arches and domes
4. 4.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
6. 6.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) coins (c) a ruler (d) two books
7. 7.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) paper with folded edges (c) a wet flat sheet (d) a U-shaped channel
8. 8.⚖️ 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
9. 9.🔍 Which is the odd one out? (a) a flat tissue (b) paper with folded edges (c) rolled paper tubes (d) a zigzag-folded sheet
10. 10.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a U-shaped channel (c) a zigzag-folded sheet (d) a torn flat sheet
11. 11.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) a balloon (d) coins
12. 12.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) a battery cell (c) a mirror (d) two books
13. 13.True or false: a torn flat sheet makes a weak bridge. (a) False (b) True
14. 14.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a balloon (c) coins (d) a battery cell
15. 15.🥚 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) it is very hot (d) its curved arch shape
16. 16.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) wash your hands (c) lick your fingers (d) skip washing
17. 17.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) not at all (c) more (d) less
18. 18.True or false: coins is needed for the paper bridge. (a) False (b) True
19. 19.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) rolled paper tubes (c) one flat sheet (d) a wet flat sheet
20. 20.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
21. 21.⚖️ 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
22. 22.🏗️ Where does an eggshell get its strength from? (a) triangles (b) tubes (c) arches and domes
23. 23.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the gap between books (c) coins it holds
24. 24.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) coins (d) a mirror
25. 25.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) the kind of coins (c) the kind of paper (d) coins it holds
26. 26.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) on a stool edge (d) low and steady
27. 27.True or false: a flat tissue makes a strong bridge. (a) True (b) False
28. 28.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.⚖️ 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
30. 30.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) more (c) fewer (d) the same number of
31. 31.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) coins it holds (b) the gap between books (c) the shape of the paper (d) the kind of paper
32. 32.🏗️ Where does a temple dome get its strength from? (a) arches and domes (b) tubes (c) triangles
33. 33.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
34. 34.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
35. 35.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
36. 36.True or false: sheets of paper is needed for the paper bridge. (a) True (b) False
37. 37.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the heart shape (c) the square (d) the star
38. 38.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) a ruler (c) yeast (d) a magnet
39. 39.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
40. 40.True or false: a battery cell is needed for the paper bridge. (a) False (b) True

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