Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 512 · 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 does the balloon rocket move along the string? (a) escaping air pushes it (b) the string pulls it (c) the straw is heavy (d) a magnet pulls it
2. 2.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a drinking straw (c) sticky tape (d) a balloon
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a battery cell (c) a drinking straw (d) sticky tape
5. 5.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) give them to a baby (d) throw them away safely
6. 6.⚖️ 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) distance it travels (d) the same straw
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) True (b) False
10. 10.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) a balloon (c) sticky tape (d) a long string
11. 11.🚀 Which of these goes forward? (a) air from the balloon (b) water a swimmer pushes (c) water from the oars (d) the rowing boat
12. 12.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) a drinking straw (d) vinegar
13. 13.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) blow it till it bursts (d) aim it at your friend
14. 14.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
15. 15.True or false: gas from the rocket goes forward. (a) False (b) True
16. 16.True or false: the rowing boat goes forward. (a) True (b) False
17. 17.True or false: air from the balloon goes forward. (a) True (b) False
18. 18.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it travels less far (d) it goes backward first
19. 19.True or false: yeast is needed for the balloon rocket. (a) False (b) True
20. 20.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
21. 21.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when it gets cold (c) it never stops (d) when the air runs out
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) False (b) True
23. 23.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a magnet (d) a drinking straw
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a long string (d) a magnet
26. 26.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
27. 27.True or false: a long string is needed for the balloon rocket. (a) False (b) True
28. 28.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the rocket (c) air from the balloon (d) gas from the rocket
29. 29.⚖️ 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) distance it travels (c) the slope of the string (d) how big we blow it
30. 30.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) more friction, less far (c) no change at all (d) it goes faster
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a long string (c) a balloon (d) a drinking straw
34. 34.⚖️ 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
35. 35.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) backward (d) straight down
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a long string (c) a drinking straw (d) sticky tape
38. 38.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) turmeric powder (c) two chairs (d) a battery cell
39. 39.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
40. 40.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the balloon (d) water a swimmer pushes

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