Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 898 · 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.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) its curved arch shape (d) it is made of steel
2. 2.🏗️ Where does a roof frame get its strength from? (a) tubes (b) triangles (c) arches and domes
3. 3.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) rolled paper tubes (b) a torn flat sheet (c) a zigzag-folded sheet (d) paper with folded edges
5. 5.🏗️ Where does an electric tower get its strength from? (a) tubes (b) arches and domes (c) triangles
6. 6.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a torn flat sheet (c) a zigzag-folded sheet (d) one flat sheet
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.🏗️ Which of these gets its strength from arches or domes? (a) an eggshell (b) a hollow bird bone (c) a round pillar (d) a bamboo pole
9. 9.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
10. 10.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds are magnetic (d) folds make it stiffer
11. 11.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
12. 12.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) True (b) False
13. 13.True or false: a flat tissue makes a strong bridge. (a) True (b) False
14. 14.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
15. 15.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) the same number of (c) fewer (d) more
16. 16.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
17. 17.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) tubes (c) triangles
18. 18.True or false: two books is needed for the paper bridge. (a) False (b) True
19. 19.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
20. 20.🏗️ Which of these gets its strength from triangles? (a) an electric tower (b) a temple dome (c) a hollow bird bone (d) an eggshell
21. 21.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) fewer coins (c) only water (d) more coins
22. 22.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) low and steady (d) on a stool edge
23. 23.True or false: rolled paper tubes makes a strong bridge. (a) True (b) False
24. 24.🧺 Which of these is not needed for the paper bridge? (a) turmeric powder (b) a ruler (c) coins (d) sheets of paper
25. 25.True or false: coins is not needed for the paper bridge. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a torn flat sheet (b) a wet flat sheet (c) a U-shaped channel (d) one flat sheet
27. 27.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
28. 28.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
29. 29.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
30. 30.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) one flat sheet (c) a U-shaped channel (d) a wet flat sheet
31. 31.🏗️ Which of these gets its strength from triangles? (a) a bridge truss (b) an eggshell (c) a temple dome (d) a bamboo pole
32. 32.⚖️ 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 paper (c) coins it holds
33. 33.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) a ruler (d) a magnet
34. 34.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) upward (c) less (d) more
35. 35.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
36. 36.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
37. 37.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) two books (d) a balloon
40. 40.🔍 Which is the odd one out? (a) a torn flat sheet (b) paper with folded edges (c) one flat sheet (d) a flat tissue

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