Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 648 · 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 of these is needed for the paper bridge? (a) a magnet (b) a battery cell (c) two books (d) a mirror
2. 2.True or false: two books is needed for the paper bridge. (a) True (b) False
3. 3.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a balloon (c) a ruler (d) a magnet
4. 4.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds add glue (c) folds make it stiffer (d) folds make it wet
5. 5.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
8. 8.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it sags and falls (c) it floats up (d) it gets stronger
9. 9.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the gap between books (b) the shape of the paper (c) the kind of paper (d) coins it holds
10. 10.🌉 Which of these makes a strong bridge? (a) rolled paper tubes (b) a torn flat sheet (c) one flat sheet (d) a wet flat sheet
11. 11.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) it is made of steel (d) its curved arch shape
12. 12.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
13. 13.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a flat tissue (b) paper with folded edges (c) rolled paper tubes (d) a zigzag-folded sheet
15. 15.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) a battery cell (d) coins
16. 16.🌉 Does paper with folded edges make a strong or a weak bridge? (a) strong bridge (b) weak bridge
17. 17.🏗️ Where does a hollow bird bone get its strength from? (a) tubes (b) arches and domes (c) triangles
18. 18.⚖️ 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 shape of the paper (d) the gap between books
19. 19.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) paper with folded edges (c) a flat tissue (d) a wet flat sheet
20. 20.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) a bridge truss (c) a hollow bird bone (d) a temple dome
21. 21.True or false: a balloon is needed for the paper bridge. (a) False (b) True
22. 22.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is kept the same. (a) True (b) False
23. 23.🏗️ Where does an eggshell get its strength from? (a) tubes (b) triangles (c) arches and domes
24. 24.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
25. 25.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) fewer (c) zero (d) more
26. 26.🛟 How should the two books be placed for the paper bridge? (a) on a stool edge (b) on top of a pet (c) low and steady (d) high and wobbly
27. 27.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
28. 28.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) tubes (c) triangles
29. 29.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is what we measure. (a) False (b) True
30. 30.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
31. 31.🧺 Which of these is needed for the paper bridge? (a) coins (b) a magnet (c) turmeric powder (d) a mirror
32. 32.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) sheets of paper (c) a ruler (d) a magnet
33. 33.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
34. 34.🧺 Which of these is not needed for the paper bridge? (a) a mirror (b) sheets of paper (c) two books (d) a ruler
35. 35.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) less (c) not at all (d) upward
36. 36.🏗️ Which of these gets its strength from triangles? (a) a roof frame (b) a hollow bird bone (c) a bamboo pole (d) an old stone bridge
37. 37.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) skip washing (b) wash your hands (c) lick your fingers (d) rub your eyes
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a balloon (c) sheets of paper (d) a ruler
40. 40.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a zigzag-folded sheet (c) paper with folded edges (d) a flat tissue

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