Paper Bridge STEM Challenge Worksheet

Science experiments lesson 26: Paper bridge challenge · Set 491 · 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.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) fewer coins (c) only water (d) more coins
2. 2.🛟 Coins have been touched by many hands. After the experiment you should ___. (a) rub your eyes (b) lick your fingers (c) skip washing (d) wash your hands
3. 3.True or false: a hollow bird bone gets its strength from a tube shape. (a) True (b) False
4. 4.🏗️ Which of these gets its strength from arches or domes? (a) a round pillar (b) an old stone bridge (c) an electric tower (d) a bridge truss
5. 5.🏗️ Where does a roof frame get its strength from? (a) tubes (b) arches and domes (c) triangles
6. 6.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it turns to card (b) it gets stronger (c) it floats up (d) it sags and falls
7. 7.🔺 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
8. 8.True or false: a zigzag-folded sheet makes a weak bridge. (a) True (b) False
9. 9.🌉 Which of these makes a strong bridge? (a) paper with folded edges (b) a wet flat sheet (c) a flat tissue (d) a torn flat sheet
10. 10.True or false: rolled paper tubes makes a weak bridge. (a) False (b) True
11. 11.🌉 Does a zigzag-folded sheet make a strong or a weak bridge? (a) weak bridge (b) strong bridge
12. 12.True or false: a hollow bird bone gets its strength from arches or domes. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a flat tissue (b) a zigzag-folded sheet (c) one flat sheet (d) a wet flat sheet
14. 14.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) strong bridge (b) weak bridge
15. 15.🏗️ Where does an old stone bridge get its strength from? (a) arches and domes (b) triangles (c) tubes
16. 16.True or false: turmeric powder is not needed for the paper bridge. (a) True (b) False
17. 17.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) two books (c) a battery cell (d) coins
18. 18.🧺 Do we need a balloon for the paper bridge? (a) needed (b) not needed
19. 19.True or false: a wet flat sheet makes a strong bridge. (a) False (b) True
20. 20.🧺 Do we need a battery cell for the paper bridge? (a) not needed (b) needed
21. 21.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the gap between books”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is the one thing we change. (a) True (b) False
23. 23.🧺 Which of these is not needed for the paper bridge? (a) a ruler (b) two books (c) coins (d) a magnet
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the paper bridge? (a) a magnet (b) yeast (c) sheets of paper (d) a mirror
26. 26.🥚 Why is an egg hard to crush when you press on its two ends? (a) it is very hot (b) it is magnetic (c) it is made of steel (d) its curved arch shape
27. 27.🛟 How should the two books be placed for the paper bridge? (a) high and wobbly (b) on top of a pet (c) low and steady (d) on a stool edge
28. 28.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a balloon (b) sheets of paper (c) coins (d) a ruler
29. 29.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
30. 30.⚖️ Fair test — which paper shape holds the most coins? Which of these is what we measure? (a) coins it holds (b) the shape of the paper (c) the gap between books (d) the kind of paper
31. 31.True or false: a bridge truss gets its strength from arches or domes. (a) False (b) True
32. 32.⚖️ Fair test — which paper shape holds the most coins? What do we do with “coins it holds”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of coins is kept the same. (a) False (b) True
35. 35.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) rolled paper tubes (b) one flat sheet (c) a torn flat sheet (d) a wet flat sheet
37. 37.🧺 Do we need coins for the paper bridge? (a) needed (b) not needed
38. 38.True or false: a battery cell is not needed for the paper bridge. (a) False (b) True
39. 39.True or false: a battery cell is needed for the paper bridge. (a) False (b) True
40. 40.🌉 Does one flat sheet make a strong or a weak bridge? (a) strong bridge (b) weak bridge

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