Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 80 · 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.🔺 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 triangle (d) the star
2. 2.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) wash your hands (c) lick your fingers (d) rub your eyes
3. 3.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
4. 4.🌉 Which of these makes a weak bridge? (a) paper with folded edges (b) a U-shaped channel (c) rolled paper tubes (d) a torn flat sheet
5. 5.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) the kind of paper (c) coins it holds
6. 6.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
7. 7.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
8. 8.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
9. 9.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a U-shaped channel (c) one flat sheet (d) a wet flat sheet
10. 10.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a ruler (d) a battery cell
11. 11.🧺 Which of these is not needed for the paper bridge? (a) sheets of paper (b) coins (c) a ruler (d) a battery cell
12. 12.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) sheets of paper (c) a mirror (d) coins
13. 13.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
14. 14.🏗️ Where does a bridge truss get its strength from? (a) tubes (b) arches and domes (c) triangles
15. 15.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
16. 16.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) its curved arch shape (c) it is made of steel (d) it is magnetic
17. 17.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
18. 18.True or false: a balloon is not needed for the paper bridge. (a) False (b) True
19. 19.True or false: an electric tower gets its strength from triangles. (a) True (b) False
20. 20.True or false: a magnet is needed for the paper bridge. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a U-shaped channel (b) a zigzag-folded sheet (c) a flat tissue (d) rolled paper tubes
22. 22.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the shape of the paper (b) coins it holds (c) where coins are placed
23. 23.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) yeast (d) two books
24. 24.🏗️ Which of these gets its strength from arches or domes? (a) a hollow bird bone (b) a temple dome (c) a round pillar (d) a roof frame
25. 25.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) more coins (c) the same coins (d) only water
26. 26.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a zigzag-folded sheet (c) a wet flat sheet (d) a torn flat sheet
27. 27.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) a magnet (c) coins (d) two books
29. 29.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) the same number of (c) more (d) fewer
30. 30.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a ruler (c) two books (d) turmeric powder
31. 31.True or false: a balloon is needed for the paper bridge. (a) False (b) True
32. 32.⚖️ 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 change it (c) we measure it
33. 33.🛟 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
34. 34.True or false: coins is needed for the paper bridge. (a) True (b) False
35. 35.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) more (c) upward (d) not at all
36. 36.True or false: a flat tissue makes a strong bridge. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a flat tissue (b) a torn flat sheet (c) a U-shaped channel (d) one flat sheet
38. 38.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
39. 39.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
40. 40.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a U-shaped channel (c) paper with folded edges (d) one flat sheet

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