Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 288 · 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 is not needed for the paper bridge? (a) a ruler (b) two books (c) coins (d) yeast
2. 2.🔺 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
3. 3.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) the same number of (c) fewer (d) more
4. 4.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a round pillar (c) an old stone bridge (d) a bridge truss
5. 5.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) True (b) False
6. 6.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) its curved arch shape (c) it is magnetic (d) it is very hot
7. 7.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) low and steady (d) high and wobbly
8. 8.True or false: turmeric powder is not needed for the paper bridge. (a) True (b) False
9. 9.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a flat tissue (c) one flat sheet (d) paper with folded edges
10. 10.🌉 Which of these makes a strong bridge? (a) a U-shaped channel (b) a flat tissue (c) one flat sheet (d) a wet flat sheet
11. 11.True or false: a hollow bird bone gets its strength from triangles. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a torn flat sheet (b) rolled paper tubes (c) one flat sheet (d) a flat tissue
13. 13.True or false: sheets of paper is not needed for the paper bridge. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
15. 15.🌉 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 stiffer (d) folds make it wet
16. 16.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
17. 17.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a mirror (c) a balloon (d) sheets of paper
18. 18.🏗️ Where does a temple dome get its strength from? (a) triangles (b) arches and domes (c) tubes
19. 19.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
20. 20.🌉 Which of these makes a strong bridge? (a) rolled paper tubes (b) one flat sheet (c) a wet flat sheet (d) a flat tissue
21. 21.⚖️ 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
22. 22.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the gap between books (b) the shape of the paper (c) coins it holds
23. 23.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) rub your eyes (c) lick your fingers (d) wash your hands
24. 24.⚖️ 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
25. 25.True or false: a magnet is not needed for the paper bridge. (a) False (b) True
26. 26.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
27. 27.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a mirror (c) sheets of paper (d) coins
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) two books (c) a ruler (d) a balloon
29. 29.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
30. 30.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
31. 31.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) upward (c) not at all (d) more
32. 32.True or false: a balloon is not needed for the paper bridge. (a) False (b) True
33. 33.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
34. 34.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
35. 35.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
36. 36.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) one flat sheet (b) a flat tissue (c) a zigzag-folded sheet (d) a torn flat sheet
38. 38.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
39. 39.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) an eggshell (c) a bridge truss (d) a hollow bird bone
40. 40.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) two books (d) a magnet

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