Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 637 · 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.🥚 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) its curved arch shape (d) it is very hot
2. 2.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
3. 3.True or false: an old stone bridge gets its strength from triangles. (a) False (b) True
4. 4.🏗️ Where does an electric tower get its strength from? (a) arches and domes (b) tubes (c) triangles
5. 5.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) triangles (c) tubes
6. 6.True or false: a U-shaped channel makes a strong bridge. (a) True (b) False
7. 7.True or false: a flat tissue makes a weak bridge. (a) False (b) True
8. 8.🧺 Which of these is not needed for the paper bridge? (a) a balloon (b) two books (c) a ruler (d) sheets of paper
9. 9.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) on a stool edge (d) low and steady
10. 10.🏗️ Which of these gets its strength from triangles? (a) a bridge truss (b) a hollow bird bone (c) an old stone bridge (d) an eggshell
11. 11.True or false: paper with folded edges makes a weak bridge. (a) True (b) False
12. 12.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the heart shape (b) the square (c) the triangle (d) the star
13. 13.🧺 Which of these is not needed for the paper bridge? (a) a mirror (b) two books (c) coins (d) a ruler
14. 14.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
15. 15.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the kind of coins (b) the shape of the paper (c) coins it holds (d) where coins are placed
16. 16.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) sheets of paper (c) a ruler (d) coins
18. 18.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) sheets of paper (c) two books (d) coins
19. 19.🔍 Which is the odd one out? (a) a U-shaped channel (b) rolled paper tubes (c) a zigzag-folded sheet (d) one flat sheet
20. 20.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds are magnetic (c) folds make it stiffer (d) folds add glue
21. 21.🧺 Do we need yeast for the paper bridge? (a) needed (b) not needed
22. 22.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
23. 23.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) tubes (c) arches and domes
24. 24.True or false: sheets of paper is needed for the paper bridge. (a) False (b) True
25. 25.True or false: coins is not needed for the paper bridge. (a) True (b) False
26. 26.⚖️ 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 paper (c) coins it holds
27. 27.⚖️ 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 kind of paper (d) the shape of the paper
28. 28.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
29. 29.🌉 Which of these makes a strong bridge? (a) a wet flat sheet (b) a torn flat sheet (c) a flat tissue (d) rolled paper tubes
30. 30.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a wet flat sheet (c) one flat sheet (d) a U-shaped channel
31. 31.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
32. 32.True or false: a magnet is not needed for the paper bridge. (a) False (b) True
33. 33.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
34. 34.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) two books (d) a battery cell
35. 35.🔍 Which is the odd one out? (a) a U-shaped channel (b) a zigzag-folded sheet (c) rolled paper tubes (d) a flat tissue
36. 36.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is what we measure. (a) True (b) False
38. 38.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) coins (c) yeast (d) a ruler
39. 39.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
40. 40.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of coins”? (a) we measure it (b) we keep it the same (c) we change it

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