Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 377 · 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 what we measure? (a) distance it travels (b) the same string (c) the same straw (d) how big we blow it
2. 2.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) backward (c) forward (d) straight down
3. 3.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a balloon (c) a mirror (d) two chairs
4. 4.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it turns into a kite (d) it can pop loudly
5. 5.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
6. 6.True or false: water a swimmer pushes goes forward. (a) True (b) False
7. 7.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) less friction (d) no change at all
8. 8.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) chew them (d) give them to a baby
9. 9.⚖️ 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
10. 10.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) blow it till it bursts (d) aim it at your friend
11. 11.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it guides the balloon (c) it holds water (d) it blows air in
12. 12.🚀 Which of these goes backward? (a) water from the oars (b) the rocket (c) the balloon (d) the rowing boat
13. 13.🎈 When does the balloon rocket stop? (a) it never stops (b) when it gets cold (c) when the air runs out (d) when it turns blue
14. 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) two chairs (d) vinegar
15. 15.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it goes much farther (d) it turns into a kite
16. 16.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
17. 17.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) a long string (d) turmeric powder
18. 18.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) water a swimmer pushes (d) the balloon
19. 19.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) distance it travels (c) how big we blow it
21. 21.True or false: the rocket goes backward. (a) True (b) False
22. 22.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
23. 23.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) air from the balloon (d) the rocket
24. 24.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
25. 25.🚀 Which of these goes forward? (a) the rocket (b) water from the oars (c) air from the balloon (d) water a swimmer pushes
26. 26.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) turmeric powder (c) a drinking straw (d) a magnet
27. 27.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) water a swimmer pushes (d) the balloon
28. 28.True or false: the rowing boat goes backward. (a) False (b) True
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) a magnet (d) sticky tape
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
33. 33.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
34. 34.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
35. 35.True or false: yeast is needed for the balloon rocket. (a) True (b) False
36. 36.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
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 string (b) how big we blow it (c) distance it travels (d) the same tape
38. 38.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) a drinking straw (c) sticky tape (d) two chairs
39. 39.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a mirror (c) a fridge magnet (d) a balloon rocket
40. 40.True or false: a mirror is needed for the balloon rocket. (a) True (b) False

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