Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 333 · 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.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) fewer (c) the same number of (d) more
2. 2.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds are magnetic (c) folds add glue (d) folds make it wet
3. 3.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) an electric tower (c) a round pillar (d) an old stone bridge
4. 4.🏗️ Where does a temple dome get its strength from? (a) triangles (b) arches and domes (c) tubes
5. 5.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a mirror (c) a ruler (d) a magnet
6. 6.🧺 Do we need a ruler for the paper bridge? (a) needed (b) not needed
7. 7.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
8. 8.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) where coins are placed (b) coins it holds (c) the gap between books (d) the shape of the paper
9. 9.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) on a stool edge (c) low and steady (d) high and wobbly
10. 10.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a wet flat sheet (c) rolled paper tubes (d) one flat sheet
11. 11.🔍 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
12. 12.True or false: a wet flat sheet makes a weak bridge. (a) True (b) False
13. 13.True or false: turmeric powder is not needed for the paper bridge. (a) True (b) False
14. 14.🌉 Which of these makes a strong bridge? (a) a U-shaped channel (b) one flat sheet (c) a flat tissue (d) a wet flat sheet
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) a magnet (c) turmeric powder (d) yeast
17. 17.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is what we measure. (a) True (b) False
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) a mirror (d) a ruler
20. 20.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) a wet flat sheet (b) one flat sheet (c) rolled paper tubes (d) a flat tissue
22. 22.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
23. 23.True or false: a bamboo pole gets its strength from arches or domes. (a) False (b) True
24. 24.True or false: a magnet is needed for the paper bridge. (a) True (b) False
25. 25.True or false: a bamboo pole gets its strength from a tube shape. (a) True (b) False
26. 26.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) a zigzag-folded sheet (d) one flat sheet
27. 27.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the star (b) the square (c) the heart shape (d) the triangle
28. 28.⚖️ 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
29. 29.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
30. 30.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is made of steel (c) its curved arch shape (d) it is magnetic
31. 31.⚖️ 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
32. 32.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) yeast (d) two books
34. 34.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) an electric tower (c) a bamboo pole (d) an old stone bridge
35. 35.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
36. 36.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) not at all (c) upward (d) less
37. 37.🔍 Which is the odd one out? (a) a U-shaped channel (b) rolled paper tubes (c) paper with folded edges (d) a flat tissue
38. 38.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) True (b) False
39. 39.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
40. 40.True or false: a round pillar gets its strength from triangles. (a) True (b) False

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