Balloon Rocket STEM Worksheet

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

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