Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 426 · 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 made of steel (c) its curved arch shape (d) it is magnetic
2. 2.⚖️ 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
3. 3.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.⚖️ 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
5. 5.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
6. 6.True or false: a battery cell is not needed for the paper bridge. (a) False (b) True
7. 7.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) high and wobbly (c) on a stool edge (d) low and steady
8. 8.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
9. 9.True or false: a flat tissue makes a strong bridge. (a) True (b) False
10. 10.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
11. 11.🔍 Which is the odd one out? (a) a wet flat sheet (b) a torn flat sheet (c) a flat tissue (d) paper with folded edges
12. 12.True or false: an old stone bridge gets its strength from a tube shape. (a) True (b) False
13. 13.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
14. 14.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) the gap between books (c) the kind of coins (d) the shape of the paper
15. 15.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a round pillar (c) a temple dome (d) an electric tower
16. 16.⚖️ 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
17. 17.True or false: a round pillar gets its strength from a tube shape. (a) False (b) True
18. 18.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) triangles (c) tubes
19. 19.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it turns to card (c) it sags and falls (d) it floats up
20. 20.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a battery cell (b) two books (c) sheets of paper (d) a ruler
21. 21.True or false: a flat tissue makes a weak bridge. (a) False (b) True
22. 22.True or false: a U-shaped channel makes a strong bridge. (a) False (b) True
23. 23.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
24. 24.True or false: an eggshell gets its strength from arches or domes. (a) True (b) False
25. 25.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is the one thing we change. (a) True (b) False
26. 26.True or false: yeast is needed for the paper bridge. (a) True (b) False
27. 27.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) an eggshell (c) a bridge truss (d) a bamboo pole
28. 28.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a wet flat sheet (c) paper with folded edges (d) a flat tissue
29. 29.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
30. 30.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
31. 31.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) turmeric powder (d) sheets of paper
32. 32.🧺 Do we need a ruler for the paper bridge? (a) needed (b) not needed
33. 33.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) skip washing (c) rub your eyes (d) wash your hands
34. 34.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) yeast (c) a mirror (d) coins
35. 35.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
36. 36.True or false: a round pillar gets its strength from triangles. (a) False (b) True
37. 37.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) sheets of paper (c) coins (d) a ruler
39. 39.True or false: coins is needed for the paper bridge. (a) True (b) False
40. 40.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) zero (c) the same number of (d) more

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