Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 307 · 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.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it goes less far (d) it flies off the string
2. 2.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) yeast (c) a long string (d) vinegar
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a balloon (c) sticky tape (d) two chairs
4. 4.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it holds water (c) it guides the balloon (d) it blows air in
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the slope of the string (c) the same string (d) distance it travels
6. 6.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) keep it away from faces (d) aim it at your friend
7. 7.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) the straw is heavy (d) escaping air pushes it
8. 8.🚀 Which of these goes forward? (a) the rowing boat (b) air from the balloon (c) water from the oars (d) water a swimmer pushes
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) vinegar (d) a long string
10. 10.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
11. 11.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when it turns blue (c) when the air runs out (d) it never stops
12. 12.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) less friction (c) no change at all (d) it goes faster
13. 13.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) throw them away safely (d) keep them in your mouth
14. 14.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) forward (d) straight down
15. 15.🚀 Which of these goes backward? (a) the balloon (b) gas from the rocket (c) the rowing boat (d) the swimmer
16. 16.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) air from the balloon (d) the rocket
17. 17.🚀 Which of these goes forward? (a) the balloon (b) air from the balloon (c) water a swimmer pushes (d) gas from the rocket
18. 18.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
19. 19.True or false: the rowing boat goes backward. (a) False (b) True
20. 20.True or false: air from the balloon goes forward. (a) False (b) True
21. 21.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
22. 22.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
23. 23.True or false: water a swimmer pushes goes backward. (a) True (b) False
24. 24.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it can pop loudly (d) it turns into a kite
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
28. 28.True or false: water from the oars goes backward. (a) True (b) False
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) vinegar (c) two chairs (d) a long string
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) how big we blow it (c) the same tape (d) the same string
31. 31.🚀 Which of these goes backward? (a) air from the balloon (b) the rowing boat (c) the rocket (d) the balloon
32. 32.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it goes backward first (d) it speeds up
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) False (b) True
34. 34.True or false: water a swimmer pushes goes forward. (a) True (b) False
35. 35.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) two chairs (c) a mirror (d) a battery cell
36. 36.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
37. 37.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
38. 38.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
39. 39.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
40. 40.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward

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