Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 191 · 40 questions

What you do (Push back, move forward): 1. Thread the string through the straw and tie it tightly between two chairs. 2. Blow up the balloon (not too much) and pinch its neck shut. 3. Tape the balloon to the straw, neck pointing backward. 4. Let go, measure how far it goes, and keep it away from faces.

1. 1.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
2. 2.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it flies off the string (d) it goes less far
3. 3.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) more friction, less far (d) it goes faster
4. 4.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) escaping air pushes it (d) a magnet pulls it
5. 5.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
6. 6.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) the swimmer (d) gas from the rocket
7. 7.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
8. 8.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
9. 9.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) aim it at your friend (d) put string round a neck
10. 10.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) turmeric powder (c) yeast (d) a drinking straw
12. 12.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a fridge magnet (c) a mirror (d) a sundial
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
17. 17.🚀 Which of these goes backward? (a) the rowing boat (b) gas from the rocket (c) the rocket (d) the balloon
18. 18.True or false: the rocket goes backward. (a) True (b) False
19. 19.True or false: yeast is needed for the balloon rocket. (a) False (b) True
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
22. 22.True or false: the rowing boat goes backward. (a) True (b) False
23. 23.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
24. 24.True or false: the swimmer goes backward. (a) False (b) True
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) the same straw (c) distance it travels (d) the same tape
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) a battery cell (d) a drinking straw
29. 29.True or false: water from the oars goes backward. (a) False (b) True
30. 30.True or false: the balloon goes forward. (a) True (b) False
31. 31.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
32. 32.True or false: air from the balloon goes backward. (a) False (b) True
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) straight down (c) forward (d) backward
35. 35.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) the balloon (d) water from the oars
36. 36.🎈 What is the job of the straw on the string? (a) it blows air in (b) it makes it heavier (c) it guides the balloon (d) it holds water
37. 37.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
38. 38.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a mirror (c) a long string (d) turmeric powder
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the same tape (c) how big we blow it (d) the slope of the string
40. 40.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed

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