Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 438 · 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? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
3. 3.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
4. 4.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
5. 5.True or false: the rocket goes backward. (a) True (b) False
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) yeast (d) a balloon
9. 9.⚖️ 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 change it (c) we measure it
10. 10.True or false: gas from the rocket goes backward. (a) True (b) False
11. 11.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
12. 12.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels farther (d) it travels less far
13. 13.🔮 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 less far (d) it goes much farther
14. 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a drinking straw (c) sticky tape (d) two chairs
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) a mirror (d) a long string
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) two chairs (c) a drinking straw (d) a long string
17. 17.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
18. 18.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
19. 19.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
20. 20.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it makes it heavier (c) it holds water (d) it blows air in
21. 21.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
22. 22.🎈 When does the balloon rocket stop? (a) when the air runs out (b) it never stops (c) when it turns blue (d) when it gets cold
23. 23.True or false: water from the oars goes backward. (a) False (b) True
24. 24.🚀 Which of these goes backward? (a) the balloon (b) water from the oars (c) the rocket (d) the rowing boat
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a long string (d) a magnet
26. 26.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) air from the balloon (d) the balloon
27. 27.True or false: a long string is needed for the balloon rocket. (a) False (b) True
28. 28.🎈 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
29. 29.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
30. 30.True or false: the rocket goes forward. (a) False (b) True
31. 31.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
32. 32.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
33. 33.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) escaping air pushes it (d) the string pulls it
34. 34.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it turns into a kite (d) it gets too heavy
35. 35.🛟 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
36. 36.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a magnet (c) a battery cell (d) a long string
37. 37.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) throw them away safely (d) chew them
38. 38.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) sticky tape (c) turmeric powder (d) a long string
39. 39.⚖️ 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 slope of the string (c) the same string (d) how big we blow it
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it

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