Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 405 · 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.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) where coins are placed (c) the kind of coins (d) the kind of paper
2. 2.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the star (c) the heart shape (d) the triangle
3. 3.🧺 Do we need a balloon for the paper bridge? (a) not needed (b) needed
4. 4.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a roof frame (c) an old stone bridge (d) a bamboo pole
5. 5.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) the same number of (c) fewer (d) zero
6. 6.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) a bridge truss (c) a bamboo pole (d) a round pillar
7. 7.True or false: one flat sheet makes a weak bridge. (a) False (b) True
8. 8.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) coins it holds (b) the kind of paper (c) the shape of the paper (d) the gap between books
9. 9.⚖️ 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 keep it the same (c) we change it
10. 10.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) True (b) False
11. 11.🥚 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) it is magnetic (d) its curved arch shape
12. 12.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
13. 13.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
14. 14.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it floats up (c) it turns to card (d) it gets stronger
15. 15.🔍 Which is the odd one out? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a U-shaped channel (d) a torn flat sheet
16. 16.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) True (b) False
17. 17.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) rub your eyes (c) wash your hands (d) lick your fingers
18. 18.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
19. 19.🏗️ Where does a hollow bird bone get its strength from? (a) triangles (b) arches and domes (c) tubes
20. 20.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) paper with folded edges (c) a wet flat sheet (d) one flat sheet
22. 22.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
23. 23.⚖️ 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) the kind of paper
24. 24.🧺 Do we need a ruler for the paper bridge? (a) needed (b) not needed
25. 25.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
26. 26.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) a ruler (d) yeast
27. 27.True or false: an electric tower gets its strength from triangles. (a) True (b) False
28. 28.🌉 Does paper with folded edges make a strong or a weak bridge? (a) weak bridge (b) strong bridge
29. 29.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) not at all (c) less (d) upward
30. 30.True or false: a mirror is needed for the paper bridge. (a) True (b) False
31. 31.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds are magnetic (c) folds make it wet (d) folds make it stiffer
32. 32.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a torn flat sheet (c) a wet flat sheet (d) rolled paper tubes
33. 33.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) tubes (c) arches and domes
34. 34.🏗️ Which of these gets its strength from arches or domes? (a) an electric tower (b) an old stone bridge (c) a round pillar (d) a hollow bird bone
35. 35.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
36. 36.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) a roof frame (c) an old stone bridge (d) an eggshell
37. 37.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) sheets of paper (d) two books
38. 38.🏗️ Which of these gets its strength from a tube shape? (a) an old stone bridge (b) an electric tower (c) a temple dome (d) a hollow bird bone
39. 39.🛟 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
40. 40.True or false: a bridge truss gets its strength from triangles. (a) False (b) True

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