Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 835 · 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 does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it wet (c) folds are magnetic (d) folds make it stiffer
2. 2.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
3. 3.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) skip washing (c) wash your hands (d) rub your eyes
4. 4.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the shape of the paper (b) the kind of paper (c) where coins are placed (d) the kind of coins
5. 5.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the heart shape (c) the star (d) the triangle
7. 7.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) a balloon (c) two books (d) sheets of paper
9. 9.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
10. 10.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is what we measure. (a) False (b) True
11. 11.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
12. 12.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) only water (b) the same coins (c) fewer coins (d) more coins
13. 13.🏗️ Where does a bridge truss get its strength from? (a) arches and domes (b) tubes (c) triangles
14. 14.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) one flat sheet (c) a wet flat sheet (d) a flat tissue
15. 15.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a magnet (c) yeast (d) a ruler
16. 16.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is magnetic (c) it is very hot (d) it is made of steel
17. 17.🧺 Which of these is not needed for the paper bridge? (a) two books (b) coins (c) yeast (d) sheets of paper
18. 18.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the shape of the paper (b) the kind of paper (c) coins it holds (d) the kind of coins
19. 19.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) coins (c) a battery cell (d) two books
21. 21.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is the one thing we change. (a) False (b) True
22. 22.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) yeast (c) coins (d) a ruler
23. 23.True or false: a hollow bird bone gets its strength from triangles. (a) False (b) True
24. 24.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we change it (b) we measure it (c) we keep it the same
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.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) zero (c) the same number of (d) fewer
27. 27.🧺 Which of these is not needed for the paper bridge? (a) coins (b) two books (c) sheets of paper (d) a mirror
28. 28.🏗️ Where does an eggshell get its strength from? (a) triangles (b) tubes (c) arches and domes
29. 29.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
30. 30.🏗️ Which of these gets its strength from a tube shape? (a) a temple dome (b) a bamboo pole (c) an old stone bridge (d) an eggshell
31. 31.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
32. 32.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
33. 33.🌉 Which of these makes a strong bridge? (a) a U-shaped channel (b) a wet flat sheet (c) a flat tissue (d) one flat sheet
34. 34.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a balloon (d) a ruler
36. 36.True or false: a temple dome gets its strength from triangles. (a) False (b) True
37. 37.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a mirror (c) turmeric powder (d) coins
38. 38.🏗️ Where does an electric tower get its strength from? (a) triangles (b) tubes (c) arches and domes
39. 39.True or false: a balloon is not needed for the paper bridge. (a) False (b) True
40. 40.🏗️ Which of these gets its strength from triangles? (a) a temple dome (b) an eggshell (c) a roof frame (d) a bamboo pole

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