Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 281 · 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) one flat sheet (b) rolled paper tubes (c) a U-shaped channel (d) a zigzag-folded sheet
2. 2.🔍 Which is the odd one out? (a) paper with folded edges (b) a torn flat sheet (c) one flat sheet (d) a wet flat sheet
3. 3.True or false: two books is needed for the paper bridge. (a) True (b) False
4. 4.True or false: coins is not needed for the paper bridge. (a) False (b) True
5. 5.🌉 Which of these makes a strong bridge? (a) a zigzag-folded sheet (b) one flat sheet (c) a torn flat sheet (d) a flat tissue
6. 6.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) more (c) upward (d) not at all
7. 7.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) two books (c) sheets of paper (d) coins
8. 8.🛟 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
9. 9.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a flat tissue (c) a U-shaped channel (d) a wet flat sheet
10. 10.🏗️ Where does a round pillar get its strength from? (a) triangles (b) arches and domes (c) tubes
11. 11.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a balloon (c) a ruler (d) sheets of paper
12. 12.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a ruler (c) a battery cell (d) coins
13. 13.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) two books (c) coins (d) sheets of paper
14. 14.True or false: a temple dome gets its strength from a tube shape. (a) False (b) True
15. 15.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it stiffer (c) folds are magnetic (d) folds make it wet
16. 16.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
17. 17.🥚 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
18. 18.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
19. 19.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
20. 20.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
22. 22.True or false: a flat tissue makes a weak bridge. (a) False (b) True
23. 23.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of coins (b) the shape of the paper (c) coins it holds (d) the gap between books
24. 24.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
25. 25.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a bridge truss (c) a temple dome (d) an old stone bridge
26. 26.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) tubes (c) triangles
27. 27.⚖️ 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
28. 28.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) triangles (c) tubes
29. 29.True or false: a temple dome gets its strength from triangles. (a) False (b) True
30. 30.🏗️ Where does an eggshell get its strength from? (a) arches and domes (b) triangles (c) tubes
31. 31.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) fewer (c) more (d) the same number of
32. 32.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it gets stronger (c) it floats up (d) it sags and falls
33. 33.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.🧺 Do we need a ruler for the paper bridge? (a) needed (b) not needed
36. 36.🌉 Does one 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? True or false: where coins are placed is kept the same. (a) True (b) False
38. 38.🏗️ Which of these gets its strength from triangles? (a) a temple dome (b) an eggshell (c) a round pillar (d) a roof frame
39. 39.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
40. 40.🔍 Which is the odd one out? (a) a flat tissue (b) a torn flat sheet (c) one flat sheet (d) a zigzag-folded sheet

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