Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 825 · 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.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) yeast (d) two books
2. 2.⚖️ 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
3. 3.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
4. 4.True or false: one flat sheet makes a strong bridge. (a) True (b) False
5. 5.⚖️ 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
6. 6.🧺 Do we need two books for the paper bridge? (a) needed (b) not needed
7. 7.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is very hot (c) it is magnetic (d) it is made of steel
8. 8.True or false: yeast is needed for the paper bridge. (a) True (b) False
9. 9.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) less (c) upward (d) more
10. 10.True or false: a round pillar gets its strength from arches or domes. (a) True (b) False
11. 11.🧺 Which of these is needed for the paper bridge? (a) sheets of paper (b) a balloon (c) yeast (d) a mirror
12. 12.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
13. 13.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it floats up (c) it gets stronger (d) it sags and falls
14. 14.True or false: a roof frame gets its strength from a tube shape. (a) False (b) True
15. 15.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the heart shape (b) the square (c) the triangle (d) the star
16. 16.True or false: rolled paper tubes makes a weak bridge. (a) True (b) False
17. 17.⚖️ 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
18. 18.🔍 Which is the odd one out? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a wet flat sheet (d) a U-shaped channel
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a ruler (c) turmeric powder (d) sheets of paper
20. 20.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a mirror (c) two books (d) sheets of paper
21. 21.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
22. 22.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
23. 23.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the gap between books (c) the shape of the paper
24. 24.🔍 Which is the odd one out? (a) a U-shaped channel (b) a torn flat sheet (c) a flat tissue (d) a wet flat sheet
25. 25.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a battery cell (d) a ruler
26. 26.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
27. 27.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
28. 28.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
29. 29.True or false: a roof frame gets its strength from triangles. (a) False (b) True
30. 30.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
31. 31.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
32. 32.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) two books (c) a battery cell (d) yeast
33. 33.🏗️ Which of these gets its strength from a tube shape? (a) an old stone bridge (b) a roof frame (c) a bamboo pole (d) an eggshell
34. 34.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds add glue (c) folds make it stiffer (d) folds make it wet
35. 35.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) the same coins (c) more coins (d) only water
36. 36.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) a ruler (c) two books (d) coins
37. 37.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a hollow bird bone (c) a roof frame (d) an eggshell
38. 38.True or false: a roof frame gets its strength from arches or domes. (a) False (b) True
39. 39.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) low and steady (c) on a stool edge (d) high and wobbly
40. 40.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) arches and domes (c) triangles

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