Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 623 · 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) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
2. 2.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is made of steel (c) its curved arch shape (d) it is magnetic
3. 3.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it stiffer (b) folds make it wet (c) folds add glue (d) folds are magnetic
4. 4.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) an electric tower (c) a bamboo pole (d) an eggshell
5. 5.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a bridge truss (c) a hollow bird bone (d) an old stone bridge
7. 7.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: turmeric powder is not needed for the paper bridge. (a) False (b) True
9. 9.True or false: a wet flat sheet makes a strong bridge. (a) True (b) False
10. 10.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) False (b) True
11. 11.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) coins (c) a ruler (d) a battery cell
12. 12.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a mirror (b) sheets of paper (c) a ruler (d) coins
13. 13.⚖️ 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
14. 14.🏗️ Which of these gets its strength from arches or domes? (a) a hollow bird bone (b) a roof frame (c) a bridge truss (d) a temple dome
15. 15.🏗️ Where does a roof frame get its strength from? (a) triangles (b) tubes (c) arches and domes
16. 16.True or false: a battery cell is needed for the paper bridge. (a) True (b) False
17. 17.🛟 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
18. 18.True or false: a zigzag-folded sheet makes a strong bridge. (a) True (b) False
19. 19.⚖️ 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 kind of paper (c) where coins are placed (d) the shape of the paper
20. 20.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the shape of the paper (b) the gap between books (c) the kind of coins (d) coins it holds
21. 21.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) a flat tissue (c) rolled paper tubes (d) a U-shaped channel
22. 22.True or false: a magnet is not needed for the paper bridge. (a) True (b) False
23. 23.🌉 Which of these makes a strong bridge? (a) one flat sheet (b) a flat tissue (c) a wet flat sheet (d) a U-shaped channel
24. 24.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is the one thing we change. (a) False (b) True
25. 25.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) a ruler (c) a balloon (d) sheets of paper
26. 26.🧺 Do we need turmeric powder for the paper bridge? (a) needed (b) not needed
27. 27.🔮 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
28. 28.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a zigzag-folded sheet (b) one flat sheet (c) rolled paper tubes (d) a U-shaped channel
30. 30.🏗️ Where does a temple dome get its strength from? (a) tubes (b) triangles (c) arches and domes
31. 31.True or false: a roof frame gets its strength from arches or domes. (a) False (b) True
32. 32.🌉 Does a wet flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
33. 33.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) two books (b) yeast (c) a ruler (d) coins
34. 34.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it gets stronger (b) it turns to card (c) it floats up (d) it sags and falls
35. 35.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the shape of the paper (c) the gap between books
36. 36.True or false: an electric tower gets its strength from triangles. (a) False (b) True
37. 37.🧺 Do we need a mirror for the paper bridge? (a) needed (b) not needed
38. 38.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the shape of the paper (c) the kind of paper
39. 39.True or false: coins is needed for the paper bridge. (a) True (b) False
40. 40.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed

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