Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 307 · 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.True or false: a roof frame gets its strength from triangles. (a) False (b) True
2. 2.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) lick your fingers (b) wash your hands (c) skip washing (d) rub your eyes
3. 3.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) not at all (b) less (c) more (d) upward
4. 4.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
5. 5.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds are magnetic (d) folds make it stiffer
6. 6.🔍 Which is the odd one out? (a) a U-shaped channel (b) paper with folded edges (c) rolled paper tubes (d) a wet flat sheet
7. 7.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge
8. 8.True or false: a flat tissue makes a weak bridge. (a) False (b) True
9. 9.True or false: sheets of paper is needed for the paper bridge. (a) False (b) True
10. 10.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) the kind of coins (b) coins it holds (c) the shape of the paper
11. 11.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) one flat sheet (c) a wet flat sheet (d) a U-shaped channel
12. 12.True or false: a bridge truss gets its strength from a tube shape. (a) True (b) False
13. 13.🏗️ Where does an old stone bridge get its strength from? (a) triangles (b) arches and domes (c) tubes
14. 14.🧺 Do we need sheets of paper for the paper bridge? (a) not needed (b) needed
15. 15.🏗️ Where does an eggshell get its strength from? (a) tubes (b) triangles (c) arches and domes
16. 16.⚖️ Fair test — which paper shape holds the most coins? True or false: the gap between books is what we measure. (a) True (b) False
17. 17.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) more (c) zero (d) fewer
18. 18.🧺 Do we need a ruler for the paper bridge? (a) not needed (b) needed
19. 19.True or false: paper with folded edges makes a strong bridge. (a) False (b) True
20. 20.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
21. 21.True or false: a U-shaped channel makes a weak bridge. (a) False (b) True
22. 22.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a wet flat sheet (c) one flat sheet (d) rolled paper tubes
23. 23.🔍 Which is the odd one out? (a) a wet flat sheet (b) a torn flat sheet (c) rolled paper tubes (d) one flat sheet
24. 24.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) sheets of paper (c) two books (d) a battery cell
25. 25.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) False (b) True
26. 26.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is made of steel (b) it is very hot (c) its curved arch shape (d) it is magnetic
27. 27.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) fewer coins (b) the same coins (c) more coins (d) only water
28. 28.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) a balloon (c) a mirror (d) sheets of paper
29. 29.🌉 Does a torn flat sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
30. 30.🌉 Which of these makes a weak bridge? (a) rolled paper tubes (b) a U-shaped channel (c) a flat tissue (d) paper with folded edges
31. 31.True or false: coins is not needed for the paper bridge. (a) True (b) False
32. 32.⚖️ 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 measure it (c) we change it
33. 33.🌉 Which of these makes a weak bridge? (a) a wet flat sheet (b) paper with folded edges (c) rolled paper tubes (d) a zigzag-folded sheet
34. 34.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) sheets of paper (b) turmeric powder (c) two books (d) coins
35. 35.⚖️ Fair test — which paper shape holds the most coins? Which of these is the one thing we change? (a) the shape of the paper (b) the kind of paper (c) the gap between books (d) coins it holds
36. 36.True or false: a balloon is needed for the paper bridge. (a) False (b) True
37. 37.True or false: a zigzag-folded sheet makes a weak bridge. (a) False (b) True
38. 38.🛟 How should the two books be placed for the paper bridge? (a) low and steady (b) high and wobbly (c) on top of a pet (d) on a stool edge
39. 39.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) yeast (c) coins (d) two books
40. 40.True or false: a hollow bird bone gets its strength from a tube shape. (a) False (b) True

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