Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 338 · 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.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
2. 2.🧺 Do we need a battery cell for the paper bridge? (a) needed (b) not needed
3. 3.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it wet (c) folds make it stiffer (d) folds add glue
4. 4.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
5. 5.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a balloon (c) a mirror (d) a ruler
6. 6.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) coins (c) turmeric powder (d) a mirror
7. 7.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it sags and falls (c) it gets stronger (d) it turns to card
8. 8.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) False (b) True
9. 9.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
10. 10.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) a U-shaped channel (b) paper with folded edges (c) a zigzag-folded sheet (d) a flat tissue
13. 13.⚖️ 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
14. 14.True or false: an eggshell gets its strength from a tube shape. (a) False (b) True
15. 15.True or false: coins is not needed for the paper bridge. (a) False (b) True
16. 16.True or false: an old stone bridge gets its strength from triangles. (a) True (b) False
17. 17.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
18. 18.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) its curved arch shape (c) it is made of steel (d) it is very hot
19. 19.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
20. 20.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
21. 21.True or false: a hollow bird bone gets its strength from a tube shape. (a) False (b) True
22. 22.🧺 Which of these is not needed for the paper bridge? (a) two books (b) a magnet (c) a ruler (d) sheets of paper
23. 23.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) coins (d) a battery cell
24. 24.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) fewer coins (c) the same coins (d) only water
25. 25.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of coins (b) where coins are placed (c) the gap between books (d) the shape of the paper
26. 26.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) on a stool edge (c) on top of a pet (d) high and wobbly
27. 27.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a torn flat sheet (c) a U-shaped channel (d) paper with folded edges
29. 29.True or false: coins is needed for the paper bridge. (a) False (b) True
30. 30.True or false: a bridge truss gets its strength from a tube shape. (a) True (b) False
31. 31.⚖️ 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 coins (c) the gap between books (d) coins it holds
32. 32.🏗️ Which of these gets its strength from arches or domes? (a) a roof frame (b) a hollow bird bone (c) an electric tower (d) an old stone bridge
33. 33.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
34. 34.🏗️ Where does a roof frame get its strength from? (a) triangles (b) tubes (c) arches and domes
35. 35.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.True or false: two books is not needed for the paper bridge. (a) False (b) True
37. 37.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) less (b) not at all (c) more (d) upward
38. 38.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a flat tissue (c) a wet flat sheet (d) paper with folded edges
39. 39.🧺 Which of these is needed for the paper bridge? (a) yeast (b) a mirror (c) sheets of paper (d) a magnet
40. 40.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge

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