Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 814 · 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.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes much farther (d) it goes less far
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.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
4. 4.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) it goes faster (d) more friction, less far
5. 5.True or false: the swimmer goes backward. (a) True (b) False
6. 6.True or false: the swimmer goes forward. (a) False (b) True
7. 7.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) turmeric powder (c) a mirror (d) two chairs
8. 8.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it can pop loudly (d) it gets too heavy
9. 9.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
10. 10.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) a long string (d) yeast
12. 12.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
13. 13.🔮 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
14. 14.True or false: the balloon goes forward. (a) False (b) True
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) vinegar (d) a long string
16. 16.🚀 Which of these goes backward? (a) the balloon (b) air from the balloon (c) the swimmer (d) the rowing boat
17. 17.True or false: a long string is needed for the balloon rocket. (a) False (b) True
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) True (b) False
20. 20.🚀 Which of these goes forward? (a) the balloon (b) air from the balloon (c) water a swimmer pushes (d) water from the oars
21. 21.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) it stays still (d) forward
22. 22.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) sticky tape (c) a battery cell (d) two chairs
24. 24.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
25. 25.True or false: gas from the rocket goes forward. (a) True (b) False
26. 26.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
27. 27.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) vinegar (d) a long string
28. 28.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) put string round a neck (d) blow it till it bursts
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) sticky tape (d) a mirror
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) a balloon (d) turmeric powder
33. 33.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
34. 34.True or false: water a swimmer pushes goes backward. (a) True (b) False
35. 35.⚖️ 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
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.⚖️ 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) how big we blow it (c) distance it travels (d) the slope of the string
38. 38.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) give them to a baby (d) keep them in your mouth
39. 39.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a balloon (c) yeast (d) a drinking straw

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