Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 58 · 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: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) only water (c) fewer coins (d) more coins
2. 2.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) turmeric powder (c) a magnet (d) coins
3. 3.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) upward (c) less (d) not at all
4. 4.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) two books (c) turmeric powder (d) coins
5. 5.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
6. 6.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) fewer (c) the same number of (d) zero
7. 7.⚖️ 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 kind of paper (c) the shape of the paper (d) the gap between books
8. 8.True or false: an eggshell gets its strength from arches or domes. (a) False (b) True
9. 9.True or false: a roof frame gets its strength from arches or domes. (a) True (b) False
10. 10.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a ruler (c) sheets of paper (d) yeast
11. 11.🏗️ Which of these gets its strength from arches or domes? (a) a bamboo pole (b) a bridge truss (c) a round pillar (d) an old stone bridge
12. 12.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) wash your hands (b) lick your fingers (c) rub your eyes (d) skip washing
13. 13.🏗️ Where does a bridge truss get its strength from? (a) triangles (b) arches and domes (c) tubes
14. 14.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
15. 15.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds add glue (c) folds make it wet (d) folds are magnetic
16. 16.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.True or false: a bridge truss gets its strength from a tube shape. (a) False (b) True
19. 19.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) True (b) False
20. 20.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a mirror (c) a ruler (d) coins
22. 22.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it gets stronger (c) it turns to card (d) it sags and falls
23. 23.True or false: a balloon is needed for the paper bridge. (a) False (b) True
24. 24.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) an old stone bridge (c) a round pillar (d) an electric tower
25. 25.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the shape of the paper (c) the kind of coins
27. 27.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) a magnet (c) a ruler (d) yeast
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a battery cell (d) a ruler
29. 29.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) coins it holds (c) the kind of paper (d) the shape of the paper
30. 30.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) rolled paper tubes (c) one flat sheet (d) a wet flat sheet
31. 31.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a hollow bird bone (c) a temple dome (d) an electric tower
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) sheets of paper (b) a magnet (c) a ruler (d) two books
34. 34.True or false: a bridge truss gets its strength from arches or domes. (a) True (b) False
35. 35.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
36. 36.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is what we measure. (a) False (b) True
37. 37.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is the one thing we change. (a) True (b) False
38. 38.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is very hot (c) its curved arch shape (d) it is magnetic
39. 39.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
40. 40.🏗️ Where does a bamboo pole get its strength from? (a) arches and domes (b) tubes (c) triangles

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