Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 43 · 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 kept the same? (a) the same string (b) how big we blow it (c) distance it travels
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a magnet (c) a long string (d) a drinking straw
6. 6.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) a battery cell (c) vinegar (d) a mirror
7. 7.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it gets too heavy (d) it can pop loudly
8. 8.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) when it turns blue (d) it never stops
9. 9.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) no change at all (d) more friction, less far
10. 10.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) turmeric powder (d) a long string
11. 11.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it speeds up (d) it travels farther
12. 12.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
13. 13.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
14. 14.🎈 What is the job of the straw on the string? (a) it blows air in (b) it holds water (c) it guides the balloon (d) it makes it heavier
15. 15.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it turns into a kite (c) it flies off the string (d) it goes much farther
16. 16.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
17. 17.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a drinking straw (d) turmeric powder
18. 18.⚖️ 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 same straw
19. 19.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) a magnet (d) a drinking straw
20. 20.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
21. 21.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) a magnet (d) a drinking straw
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) distance it travels (c) how big we blow it
23. 23.True or false: gas from the rocket goes forward. (a) True (b) False
24. 24.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) vinegar (c) sticky tape (d) turmeric powder
25. 25.True or false: the swimmer goes backward. (a) False (b) True
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
27. 27.True or false: the rocket goes forward. (a) True (b) False
28. 28.🛟 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
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) yeast (c) a drinking straw (d) sticky tape
30. 30.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
31. 31.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a mirror (c) a balloon rocket (d) a fridge magnet
32. 32.⚖️ 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 keep it the same (c) we change it
33. 33.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
34. 34.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
35. 35.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) put string round a neck (c) blow it till it bursts (d) keep it away from faces
36. 36.🚀 Which of these goes forward? (a) gas from the rocket (b) the swimmer (c) air from the balloon (d) water from the oars
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 tape (b) the same string (c) how big we blow it (d) the same straw
38. 38.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
39. 39.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) backward (d) forward
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a drinking straw (c) two chairs (d) a mirror

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