Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 737 · 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.⚖️ 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) how big we blow it (d) the slope of the string
2. 2.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it makes it heavier (c) it holds water (d) it blows air in
3. 3.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
5. 5.True or false: water a swimmer pushes goes forward. (a) True (b) False
6. 6.True or false: air from the balloon goes backward. (a) True (b) False
7. 7.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
8. 8.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) give them to a baby (d) chew them
9. 9.True or false: the swimmer goes backward. (a) True (b) False
10. 10.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
11. 11.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) escaping air pushes it (c) a magnet pulls it (d) the string pulls it
12. 12.True or false: the rowing boat goes backward. (a) True (b) False
13. 13.🚀 Which of these goes backward? (a) the rowing boat (b) air from the balloon (c) the balloon (d) the rocket
14. 14.True or false: air from the balloon goes forward. (a) False (b) True
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) yeast (d) a drinking straw
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a mirror (c) sticky tape (d) vinegar
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.True or false: water from the oars goes forward. (a) False (b) True
20. 20.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
21. 21.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
22. 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a magnet (c) sticky tape (d) a drinking straw
23. 23.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it turns into a kite (d) it changes colour
24. 24.🎈 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
25. 25.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) no change at all (c) less friction (d) it goes faster
26. 26.🧺 Which of these is needed for the balloon rocket? (a) two chairs (b) yeast (c) a magnet (d) vinegar
27. 27.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) aim it at your friend (d) keep it away from faces
28. 28.True or false: the balloon goes backward. (a) False (b) True
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) a long string (d) a battery cell
30. 30.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
31. 31.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
32. 32.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the balloon (c) the swimmer (d) the rocket
33. 33.True or false: gas from the rocket goes forward. (a) True (b) False
34. 34.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
35. 35.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) how big we blow it (c) the same straw (d) distance it travels
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a battery cell (c) sticky tape (d) a long string
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
40. 40.True or false: the rocket goes backward. (a) False (b) True

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