Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 721 · 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 “the same string”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.True or false: the rocket goes backward. (a) False (b) True
4. 4.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it goes less far (d) it turns into a kite
5. 5.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
6. 6.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
7. 7.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) straight down (d) forward
8. 8.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
9. 9.⚖️ 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 change it (c) we measure it
10. 10.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
11. 11.🎈 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
12. 12.🔮 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
13. 13.⚖️ 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
14. 14.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) air from the balloon (d) the rowing boat
15. 15.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False
17. 17.True or false: the balloon goes backward. (a) False (b) True
18. 18.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
19. 19.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
20. 20.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the slope of the string (c) how big we blow it (d) the same tape
22. 22.🔮 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
23. 23.True or false: air from the balloon goes backward. (a) True (b) False
24. 24.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) yeast (d) a balloon
25. 25.True or false: water from the oars goes forward. (a) True (b) False
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) distance it travels (c) the same straw (d) the slope of the string
27. 27.⚖️ 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) the slope of the string (c) distance it travels
28. 28.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
29. 29.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the swimmer (d) water from the oars
30. 30.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) a long string (d) a mirror
31. 31.🛟 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
32. 32.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water a swimmer pushes (d) the swimmer
33. 33.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
34. 34.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
35. 35.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) vinegar (d) a balloon
36. 36.🎈 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
37. 37.True or false: water a swimmer pushes goes forward. (a) False (b) True
38. 38.True or false: the swimmer goes forward. (a) True (b) False
39. 39.🚀 Which of these goes forward? (a) the balloon (b) water from the oars (c) gas from the rocket (d) air from the balloon
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) a drinking straw (c) a long string (d) a balloon

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