Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 875 · 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 turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
2. 2.🔮 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
3. 3.True or false: the swimmer goes forward. (a) False (b) True
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a long string (c) sticky tape (d) two chairs
5. 5.⚖️ 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 change it (c) we keep it the same
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a mirror (c) two chairs (d) a balloon
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a battery cell (c) a drinking straw (d) sticky tape
8. 8.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) backward (d) it stays still
9. 9.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) yeast (c) a magnet (d) a balloon
10. 10.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a fridge magnet (d) a sundial
11. 11.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it flies off the string (d) it goes less far
12. 12.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
13. 13.True or false: water from the oars goes backward. (a) True (b) False
14. 14.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
15. 15.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the slope of the string
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
20. 20.True or false: gas from the rocket goes forward. (a) False (b) True
21. 21.True or false: gas from the rocket goes backward. (a) False (b) True
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) sticky tape (c) a long string (d) a mirror
24. 24.⚖️ 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 keep it the same (c) we change it
25. 25.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) water a swimmer pushes (d) the balloon
26. 26.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
27. 27.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
28. 28.🎈 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
29. 29.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) more friction, less far (c) no change at all (d) less friction
30. 30.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) the swimmer (d) gas from the rocket
31. 31.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the string pulls it (c) a magnet pulls it (d) the straw is heavy
32. 32.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it makes it heavier (d) it guides the balloon
33. 33.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
34. 34.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) put string round a neck (d) aim it at your friend
35. 35.🧺 Which of these is not needed for the balloon rocket? (a) vinegar (b) two chairs (c) a balloon (d) sticky tape
36. 36.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) vinegar (d) sticky tape
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a magnet (c) a drinking straw (d) a balloon
39. 39.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
40. 40.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a long string (c) turmeric powder (d) a mirror

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