Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 231 · 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.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
2. 2.🚀 Which of these goes backward? (a) the rocket (b) water a swimmer pushes (c) the swimmer (d) the balloon
3. 3.True or false: the balloon goes backward. (a) False (b) True
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) sticky tape (d) vinegar
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) how big we blow it (c) the same string (d) distance it travels
6. 6.⚖️ 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
7. 7.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) the rocket (d) air from the balloon
8. 8.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
9. 9.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) True (b) False
12. 12.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it speeds up (d) it travels less far
13. 13.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
14. 14.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) air from the balloon (d) the swimmer
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) keep it away from faces (d) put string round a neck
17. 17.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
18. 18.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a fridge magnet (c) a balloon rocket (d) a sundial
19. 19.⚖️ 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
20. 20.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
21. 21.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
22. 22.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) vinegar (c) yeast (d) a balloon
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a long string (c) a balloon (d) a drinking straw
24. 24.True or false: water from the oars goes backward. (a) False (b) True
25. 25.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) chew them (d) throw them away safely
26. 26.True or false: the rocket goes forward. (a) False (b) True
27. 27.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
28. 28.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) water a swimmer pushes (d) the balloon
29. 29.🚀 Which of these goes backward? (a) the balloon (b) water from the oars (c) the rowing boat (d) the swimmer
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a drinking straw (c) a balloon (d) sticky tape
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.⚖️ 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
33. 33.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
34. 34.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) a magnet pulls it (d) the string pulls it
35. 35.🎈 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
36. 36.⚖️ 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) how big we blow it (c) the same straw (d) the same string
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a mirror (c) a long string (d) two chairs
38. 38.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) it goes faster (d) more friction, less far
39. 39.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
40. 40.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) backward (c) forward (d) straight down

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