Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 229 · 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: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it travels less far (d) it goes backward first
2. 2.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) a magnet pulls it (d) escaping air pushes it
3. 3.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) backward (c) straight down (d) forward
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) two chairs (d) yeast
5. 5.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
6. 6.🔮 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
7. 7.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
8. 8.True or false: gas from the rocket goes backward. (a) False (b) True
9. 9.⚖️ 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) distance it travels (d) how big we blow it
10. 10.🛟 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
11. 11.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
12. 12.True or false: water a swimmer pushes goes forward. (a) False (b) True
13. 13.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) air from the balloon (d) the balloon
14. 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) two chairs (c) sticky tape (d) a drinking straw
15. 15.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the rocket (c) gas from the rocket (d) air from the balloon
16. 16.True or false: the rowing boat goes forward. (a) True (b) False
17. 17.⚖️ 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
18. 18.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) sticky tape (c) a magnet (d) a balloon
20. 20.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
21. 21.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
22. 22.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) water a swimmer pushes (d) the rocket
23. 23.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) the same straw (c) distance it travels (d) the slope of the string
26. 26.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
27. 27.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) vinegar (c) a long string (d) sticky tape
28. 28.True or false: air from the balloon goes backward. (a) False (b) True
29. 29.🔮 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 much farther (d) it goes less far
30. 30.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
31. 31.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
33. 33.True or false: the rocket goes forward. (a) False (b) True
34. 34.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) yeast (c) a magnet (d) a battery cell
35. 35.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it blows air in (c) it holds water (d) it makes it heavier
36. 36.True or false: yeast is needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) two chairs (c) a drinking straw (d) a balloon
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) yeast (d) a long string
39. 39.⚖️ 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
40. 40.True or false: water from the oars goes forward. (a) True (b) False

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