Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 79 · 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) skip washing (c) wash your hands (d) rub your eyes
2. 2.🧺 Do we need sheets of paper for the paper bridge? (a) needed (b) not needed
3. 3.🌉 Which of these makes a weak bridge? (a) a zigzag-folded sheet (b) paper with folded edges (c) rolled paper tubes (d) a flat tissue
4. 4.True or false: a battery cell is needed for the paper bridge. (a) True (b) False
5. 5.⚖️ Fair test — which paper shape holds the most coins? Which of these is kept the same? (a) coins it holds (b) the kind of paper (c) the shape of the paper
6. 6.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it turns to card (c) it floats up (d) it gets stronger
7. 7.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) more coins (b) fewer coins (c) only water (d) the same coins
8. 8.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on a stool edge (c) on top of a pet (d) low and steady
9. 9.True or false: sheets of paper is not needed for the paper bridge. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) paper with folded edges (b) one flat sheet (c) a flat tissue (d) a torn flat sheet
11. 11.True or false: a torn flat sheet makes a strong bridge. (a) True (b) False
12. 12.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
13. 13.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
14. 14.⚖️ Fair test — which paper shape holds the most coins? True or false: where coins are placed is kept the same. (a) False (b) True
15. 15.🧺 Do we need coins for the paper bridge? (a) not needed (b) needed
16. 16.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
18. 18.🧺 Which of these is not needed for the paper bridge? (a) a magnet (b) coins (c) two books (d) a ruler
19. 19.🏗️ Which of these gets its strength from triangles? (a) an eggshell (b) a bamboo pole (c) a hollow bird bone (d) an electric tower
20. 20.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a wet flat sheet (c) a U-shaped channel (d) a torn flat sheet
21. 21.True or false: a bridge truss gets its strength from a tube shape. (a) True (b) False
22. 22.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) fewer (b) more (c) zero (d) the same number of
23. 23.🔮 Predict: you put the coins in the middle instead of near the ends. The bridge bends ___. (a) upward (b) less (c) more (d) not at all
24. 24.🏗️ Where does an eggshell get its strength from? (a) tubes (b) arches and domes (c) triangles
25. 25.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) True (b) False
26. 26.🔺 Which shape do engineers use in bridges and towers because it keeps its shape under a push? (a) the square (b) the star (c) the triangle (d) the heart shape
27. 27.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds are magnetic (b) folds add glue (c) folds make it stiffer (d) folds make it wet
28. 28.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) a torn flat sheet (d) rolled paper tubes
29. 29.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) the kind of paper (b) where coins are placed (c) coins it holds (d) the kind of coins
30. 30.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) paper with folded edges (b) a zigzag-folded sheet (c) a torn flat sheet (d) a U-shaped channel
32. 32.True or false: one flat sheet makes a weak bridge. (a) True (b) False
33. 33.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) sheets of paper (d) turmeric powder
34. 34.🌉 Which of these makes a strong bridge? (a) a flat tissue (b) a wet flat sheet (c) one flat sheet (d) paper with folded edges
35. 35.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the shape of the paper”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) coins (b) a ruler (c) two books (d) a magnet
37. 37.True or false: a battery cell is not needed for the paper bridge. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: turmeric powder is needed for the paper bridge. (a) True (b) False
40. 40.True or false: paper with folded edges makes a strong bridge. (a) False (b) True

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