Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 494 · 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.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) rub your eyes (c) skip washing (d) wash your hands
2. 2.🔍 Which is the odd one out? (a) a flat tissue (b) a U-shaped channel (c) a torn flat sheet (d) a wet flat sheet
3. 3.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the kind of paper (b) coins it holds (c) the shape of the paper
4. 4.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) a magnet (c) sheets of paper (d) two books
7. 7.🔍 Which is the odd one out? (a) one flat sheet (b) a wet flat sheet (c) a torn flat sheet (d) rolled paper tubes
8. 8.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) two books (c) a mirror (d) sheets of paper
9. 9.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a torn flat sheet (c) paper with folded edges (d) rolled paper tubes
10. 10.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds add glue (b) folds make it wet (c) folds make it stiffer (d) folds are magnetic
11. 11.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) True (b) False
12. 12.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) paper with folded edges (c) rolled paper tubes (d) a wet flat sheet
13. 13.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) more (b) not at all (c) upward (d) less
14. 14.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a roof frame (c) a temple dome (d) a hollow bird bone
15. 15.🏗️ Where does an electric tower get its strength from? (a) tubes (b) arches and domes (c) triangles
16. 16.⚖️ 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 gap between books (d) the kind of paper
17. 17.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) low and steady (c) on top of a pet (d) on a stool edge
18. 18.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) coins (d) a balloon
19. 19.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is magnetic (b) it is made of steel (c) it is very hot (d) its curved arch shape
20. 20.🏗️ Where does an old stone bridge get its strength from? (a) tubes (b) arches and domes (c) triangles
21. 21.True or false: paper with folded edges makes a strong bridge. (a) False (b) True
22. 22.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
23. 23.True or false: an eggshell gets its strength from triangles. (a) True (b) False
24. 24.True or false: turmeric powder is needed for the paper bridge. (a) True (b) False
25. 25.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
26. 26.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) where coins are placed (b) coins it holds (c) the kind of paper (d) the shape of the paper
27. 27.🧺 Which of these is needed for the paper bridge? (a) turmeric powder (b) two books (c) a mirror (d) a balloon
28. 28.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for the paper bridge? (a) a mirror (b) a balloon (c) a battery cell (d) a ruler
30. 30.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
32. 32.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) two books (c) sheets of paper (d) coins
33. 33.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it sags and falls (c) it floats up (d) it turns to card
34. 34.True or false: a mirror is not needed for the paper bridge. (a) False (b) True
35. 35.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a ruler (c) sheets of paper (d) yeast
38. 38.🔍 Which is the odd one out? (a) paper with folded edges (b) a U-shaped channel (c) one flat sheet (d) rolled paper tubes
39. 39.🧺 Which of these is needed for the paper bridge? (a) a balloon (b) coins (c) a mirror (d) a battery cell
40. 40.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) turmeric powder (c) sheets of paper (d) two books

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