Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 654 · 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.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) two books (c) coins (d) a magnet
3. 3.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) high and wobbly (c) low and steady (d) on a stool edge
4. 4.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
6. 6.🌉 Which of these makes a strong bridge? (a) a zigzag-folded sheet (b) a flat tissue (c) one flat sheet (d) a torn flat sheet
7. 7.🔍 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
8. 8.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is what we measure. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a U-shaped channel (b) rolled paper tubes (c) a zigzag-folded sheet (d) a torn flat sheet
10. 10.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) only water (c) the same coins (d) more coins
11. 11.🔍 Which is the odd one out? (a) one flat sheet (b) a U-shaped channel (c) paper with folded edges (d) a zigzag-folded sheet
12. 12.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
13. 13.🥚 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 magnetic (d) it is made of steel
14. 14.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of coins (b) where coins are placed (c) coins it holds (d) the kind of paper
15. 15.🏗️ Which of these gets its strength from triangles? (a) a hollow bird bone (b) a bamboo pole (c) a bridge truss (d) an old stone bridge
16. 16.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) skip washing (c) wash your hands (d) lick your fingers
17. 17.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a flat tissue (c) a wet flat sheet (d) a U-shaped channel
19. 19.🧺 Which of these is needed for the paper bridge? (a) a battery cell (b) turmeric powder (c) a ruler (d) a magnet
20. 20.True or false: a roof frame gets its strength from arches or domes. (a) True (b) False
21. 21.🌉 Which of these makes a weak bridge? (a) a wet flat sheet (b) a zigzag-folded sheet (c) paper with folded edges (d) rolled paper tubes
22. 22.🏗️ Which of these gets its strength from a tube shape? (a) a bridge truss (b) a roof frame (c) a bamboo pole (d) an electric tower
23. 23.🏗️ Which of these gets its strength from a tube shape? (a) an old stone bridge (b) a hollow bird bone (c) an electric tower (d) a roof frame
24. 24.🏗️ Where does an eggshell get its strength from? (a) triangles (b) arches and domes (c) tubes
25. 25.🏗️ Where does an electric tower get its strength from? (a) triangles (b) tubes (c) arches and domes
26. 26.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
27. 27.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it stiffer (c) folds make it wet (d) folds are magnetic
28. 28.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
29. 29.True or false: a battery cell is not needed for the paper bridge. (a) False (b) True
30. 30.True or false: rolled paper tubes makes a strong bridge. (a) False (b) True
31. 31.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a battery cell (c) a mirror (d) sheets of paper
32. 32.True or false: one flat sheet makes a weak bridge. (a) False (b) True
33. 33.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) yeast (c) coins (d) a battery cell
34. 34.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) not at all (c) less (d) more
35. 35.⚖️ 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 coins (c) coins it holds
36. 36.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a torn flat sheet (c) paper with folded edges (d) a flat tissue
37. 37.⚖️ 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
38. 38.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) zero (d) fewer
39. 39.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
40. 40.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge

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