Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 301 · 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.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it changes colour (c) it gets too heavy (d) it turns into a kite
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
3. 3.🚀 Which of these goes backward? (a) the balloon (b) air from the balloon (c) the rocket (d) the swimmer
4. 4.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
5. 5.True or false: the balloon goes backward. (a) False (b) True
6. 6.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) less friction (c) no change at all (d) more friction, less far
7. 7.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
8. 8.True or false: air from the balloon goes forward. (a) False (b) True
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) distance it travels (c) the same tape (d) how big we blow it
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.⚖️ 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 slope of the string (c) the same string (d) distance it travels
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) two chairs (d) vinegar
14. 14.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it goes backward first (d) it travels farther
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) sticky tape (c) a balloon (d) a drinking straw
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a long string (d) yeast
17. 17.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) aim it at your friend (d) blow it till it bursts
18. 18.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
19. 19.True or false: a mirror is needed for the balloon rocket. (a) False (b) True
20. 20.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) turmeric powder (c) a long string (d) a mirror
21. 21.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) turmeric powder (c) a long string (d) a balloon
22. 22.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
23. 23.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
24. 24.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
25. 25.True or false: gas from the rocket goes forward. (a) False (b) True
26. 26.True or false: the rocket goes backward. (a) True (b) False
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a drinking straw (c) two chairs (d) a balloon
30. 30.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
31. 31.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
32. 32.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a magnet (c) a mirror (d) a balloon
33. 33.True or false: air from the balloon goes backward. (a) False (b) True
34. 34.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
35. 35.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) throw them away safely (c) keep them in your mouth (d) chew them
36. 36.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
37. 37.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) False (b) True
39. 39.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) forward (d) straight down
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False

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