Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 188 · 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 made of steel (b) it is magnetic (c) it is very hot (d) its curved arch shape
2. 2.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) high and wobbly (d) low and steady
3. 3.True or false: yeast is not needed for the paper bridge. (a) True (b) False
4. 4.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) zero (d) more
5. 5.🏗️ Which of these gets its strength from arches or domes? (a) a bamboo pole (b) a hollow bird bone (c) an old stone bridge (d) a round pillar
6. 6.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
7. 7.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
8. 8.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
9. 9.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) tubes (c) triangles
10. 10.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the kind of paper (b) the shape of the paper (c) coins it holds
11. 11.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) a mirror (c) coins (d) two books
12. 12.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) tubes (c) triangles
13. 13.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) a ruler (d) a battery cell
14. 14.True or false: a flat tissue makes a strong bridge. (a) True (b) False
15. 15.🧺 Which of these is needed for the paper bridge? (a) a ruler (b) yeast (c) a balloon (d) a magnet
16. 16.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
17. 17.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
18. 18.🔍 Which is the odd one out? (a) a flat tissue (b) a torn flat sheet (c) one flat sheet (d) paper with folded edges
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) a magnet (d) two books
20. 20.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds make it stiffer (d) folds are magnetic
21. 21.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
22. 22.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a torn flat sheet (c) a flat tissue (d) paper with folded edges
23. 23.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) a balloon (c) coins (d) two books
25. 25.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) upward (c) more (d) not at all
27. 27.True or false: an electric tower gets its strength from a tube shape. (a) False (b) True
28. 28.🧺 Do we need two books for the paper bridge? (a) not needed (b) needed
29. 29.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
30. 30.🧺 Which of these is not needed for the paper bridge? (a) turmeric powder (b) a ruler (c) coins (d) two books
31. 31.🏗️ Where does an eggshell get its strength from? (a) arches and domes (b) triangles (c) tubes
32. 32.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) where coins are placed (b) the shape of the paper (c) coins it holds (d) the kind of coins
33. 33.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) a mirror (c) a battery cell (d) a magnet
34. 34.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
35. 35.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
36. 36.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) one flat sheet (c) a U-shaped channel (d) a torn flat sheet
37. 37.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
38. 38.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) coins it holds (b) the kind of coins (c) the gap between books (d) the shape of the paper
40. 40.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) arches and domes (c) tubes

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