Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 238 · 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 star (b) the heart shape (c) the square (d) the triangle
2. 2.True or false: a wet flat sheet makes a weak bridge. (a) True (b) False
3. 3.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) the same coins (c) fewer coins (d) only water
4. 4.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🔍 Which is the odd one out? (a) rolled paper tubes (b) a flat tissue (c) a U-shaped channel (d) a zigzag-folded sheet
6. 6.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of paper (b) the kind of coins (c) the shape of the paper (d) the gap between books
7. 7.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a roof frame (c) a bamboo pole (d) a bridge truss
8. 8.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a mirror (c) sheets of paper (d) a ruler
9. 9.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
10. 10.True or false: a flat tissue makes a weak bridge. (a) False (b) True
11. 11.True or false: an eggshell gets its strength from arches or domes. (a) False (b) True
12. 12.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) more (c) upward (d) less
13. 13.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
14. 14.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
15. 15.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
16. 16.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
17. 17.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) fewer (d) zero
18. 18.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it wet (c) folds make it stiffer (d) folds are magnetic
19. 19.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) coins (d) a magnet
20. 20.True or false: an electric tower gets its strength from a tube shape. (a) False (b) True
21. 21.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
22. 22.🏗️ Where does a round pillar get its strength from? (a) arches and domes (b) triangles (c) tubes
23. 23.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
24. 24.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) where coins are placed (b) the kind of paper (c) coins it holds (d) the gap between books
25. 25.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) tubes (c) triangles
26. 26.🔍 Which is the odd one out? (a) a U-shaped channel (b) a torn flat sheet (c) a zigzag-folded sheet (d) paper with folded edges
27. 27.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) a roof frame (c) an eggshell (d) a hollow bird bone
28. 28.🧺 Do we need a mirror for the paper bridge? (a) not needed (b) needed
29. 29.True or false: a hollow bird bone gets its strength from triangles. (a) True (b) False
30. 30.🧺 Which of these is not needed for the paper bridge? (a) two books (b) coins (c) yeast (d) sheets of paper
31. 31.🌉 Does a flat tissue make a strong or a weak bridge? (a) strong bridge (b) weak bridge
32. 32.🥚 Why is an egg hard to crush when you press on its two ends? (a) its curved arch shape (b) it is made of steel (c) it is very hot (d) it is magnetic
33. 33.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) coins (d) a mirror
34. 34.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
35. 35.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) rolled paper tubes (c) a torn flat sheet (d) a U-shaped channel
36. 36.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) True (b) False
37. 37.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
38. 38.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is what we measure. (a) True (b) False
39. 39.🏗️ Where does a temple dome get its strength from? (a) triangles (b) arches and domes (c) tubes
40. 40.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) weak bridge (b) strong bridge

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