Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 413 · 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.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
2. 2.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the triangle (b) the star (c) the heart shape (d) the square
3. 3.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the kind of paper (b) the shape of the paper (c) coins it holds
4. 4.True or false: a roof frame gets its strength from arches or domes. (a) False (b) True
5. 5.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) coins (c) a balloon (d) sheets of paper
6. 6.🔍 Which is the odd one out? (a) rolled paper tubes (b) a zigzag-folded sheet (c) a U-shaped channel (d) one flat sheet
7. 7.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
8. 8.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a zigzag-folded sheet (c) one flat sheet (d) a torn flat sheet
9. 9.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) zero (b) more (c) the same number of (d) fewer
11. 11.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) wash your hands (c) skip washing (d) lick your fingers
12. 12.True or false: a roof frame gets its strength from triangles. (a) True (b) False
13. 13.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is the one thing we change. (a) False (b) True
14. 14.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds make it stiffer (c) folds add glue (d) folds make it wet
15. 15.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
16. 16.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is kept the same. (a) False (b) True
17. 17.🧺 Do we need yeast for the paper bridge? (a) not needed (b) needed
18. 18.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
19. 19.True or false: a bridge truss gets its strength from triangles. (a) False (b) True
20. 20.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
21. 21.🏗️ Which of these gets its strength from triangles? (a) a bridge truss (b) an eggshell (c) a hollow bird bone (d) a temple dome
22. 22.🌉 Does a flat tissue make a strong or a weak bridge? (a) weak bridge (b) strong bridge
23. 23.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
24. 24.⚖️ 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
25. 25.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a magnet (b) coins (c) two books (d) a ruler
27. 27.🥚 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
28. 28.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the gap between books (b) the shape of the paper (c) where coins are placed (d) the kind of coins
29. 29.True or false: a U-shaped channel makes a weak bridge. (a) True (b) False
30. 30.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) a zigzag-folded sheet (c) a torn flat sheet (d) rolled paper tubes
32. 32.🔍 Which is the odd one out? (a) a torn flat sheet (b) one flat sheet (c) a zigzag-folded sheet (d) a flat tissue
33. 33.True or false: yeast is needed for the paper bridge. (a) False (b) True
34. 34.True or false: a flat tissue makes a weak bridge. (a) False (b) True
35. 35.⚖️ Fair test — which paper shape holds the most coins? True or false: coins it holds is kept the same. (a) False (b) True
36. 36.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a bamboo pole (c) a bridge truss (d) an electric tower
37. 37.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) an electric tower (c) a bridge truss (d) a hollow bird bone
38. 38.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it floats up (b) it turns to card (c) it gets stronger (d) it sags and falls
39. 39.🧺 Which of these is not needed for the paper bridge? (a) coins (b) two books (c) sheets of paper (d) a battery cell
40. 40.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) low and steady (c) on a stool edge (d) on top of a pet

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