Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 551 · 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.True or false: a wet flat sheet makes a strong bridge. (a) True (b) False
2. 2.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
3. 3.⚖️ 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
4. 4.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) less (c) upward (d) more
5. 5.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) rub your eyes (c) wash your hands (d) lick your fingers
6. 6.True or false: rolled paper tubes makes a strong bridge. (a) True (b) False
7. 7.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) the shape of the paper (c) the kind of coins (d) where coins are placed
8. 8.True or false: coins is not needed for the paper bridge. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) one flat sheet (b) a zigzag-folded sheet (c) a torn flat sheet (d) a flat tissue
10. 10.⚖️ 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
11. 11.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) on top of a pet (c) on a stool edge (d) high and wobbly
12. 12.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
13. 13.🔺 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 star (d) the heart shape
14. 14.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) a balloon (c) a mirror (d) a battery cell
15. 15.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is very hot (c) it is made of steel (d) its curved arch shape
17. 17.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
18. 18.True or false: sheets of paper is needed for the paper bridge. (a) True (b) False
19. 19.⚖️ 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
20. 20.True or false: a ruler is not needed for the paper bridge. (a) False (b) True
21. 21.True or false: a balloon is not needed for the paper bridge. (a) True (b) False
22. 22.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) yeast (c) a ruler (d) sheets of paper
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) coins it holds (c) the kind of paper
24. 24.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) coins (c) turmeric powder (d) a battery cell
25. 25.🏗️ Where does a bridge truss get its strength from? (a) triangles (b) arches and domes (c) tubes
26. 26.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
27. 27.True or false: yeast is not needed for the paper bridge. (a) False (b) True
28. 28.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
30. 30.🏗️ Which of these gets its strength from triangles? (a) a temple dome (b) an eggshell (c) a bridge truss (d) a round pillar
31. 31.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it stiffer (c) folds add glue (d) folds make it wet
32. 32.True or false: two books is not needed for the paper bridge. (a) True (b) False
33. 33.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
34. 34.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) more coins (c) only water (d) the same coins
35. 35.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) an old stone bridge (c) a roof frame (d) a hollow bird bone
37. 37.🏗️ Where does an electric tower get its strength from? (a) tubes (b) triangles (c) arches and domes
38. 38.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) True (b) False
39. 39.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a torn flat sheet (c) a U-shaped channel (d) a zigzag-folded sheet
40. 40.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we keep it the same (c) we change it

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