Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 907 · 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.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
2. 2.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a wet flat sheet (c) a U-shaped channel (d) paper with folded edges
3. 3.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
4. 4.🏗️ Where does a temple dome get its strength from? (a) tubes (b) triangles (c) arches and domes
5. 5.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) lick your fingers (c) wash your hands (d) skip washing
6. 6.True or false: a temple dome gets its strength from arches or domes. (a) False (b) True
7. 7.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is kept the same. (a) True (b) False
8. 8.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is very hot (c) it is magnetic (d) its curved arch shape
9. 9.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
10. 10.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) coins (c) a mirror (d) sheets of paper
11. 11.True or false: a mirror is needed for the paper bridge. (a) True (b) False
12. 12.🏗️ Where does an electric tower get its strength from? (a) tubes (b) triangles (c) arches and domes
13. 13.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) a temple dome (c) a bamboo pole (d) an electric tower
14. 14.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds make it wet (c) folds add glue (d) folds are magnetic
15. 15.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
17. 17.True or false: an old stone bridge gets its strength from triangles. (a) False (b) True
18. 18.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) the same number of (c) fewer (d) zero
19. 19.🧺 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
20. 20.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the triangle (c) the heart shape (d) the star
21. 21.🏗️ Which of these gets its strength from arches or domes? (a) a bridge truss (b) a hollow bird bone (c) a round pillar (d) an eggshell
22. 22.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
23. 23.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a battery cell (c) two books (d) a magnet
25. 25.🔍 Which is the odd one out? (a) a U-shaped channel (b) paper with folded edges (c) a torn flat sheet (d) a zigzag-folded sheet
26. 26.🌉 Does one flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
27. 27.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) on top of a pet (c) on a stool edge (d) high and wobbly
28. 28.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) a torn flat sheet (c) rolled paper tubes (d) a zigzag-folded sheet
29. 29.🔍 Which is the odd one out? (a) one flat sheet (b) a wet flat sheet (c) a torn flat sheet (d) a U-shaped channel
30. 30.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) upward (c) not at all (d) more
31. 31.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
32. 32.True or false: a roof frame gets its strength from a tube shape. (a) True (b) False
33. 33.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
34. 34.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it turns to card (c) it floats up (d) it sags and falls
35. 35.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) True (b) False
37. 37.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) False (b) True
38. 38.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) two books (d) yeast
39. 39.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
40. 40.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed

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