Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 707 · 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.True or false: gas from the rocket goes backward. (a) True (b) False
2. 2.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the rowing boat (c) water from the oars (d) gas from the rocket
3. 3.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) when it turns blue (d) it never stops
4. 4.True or false: the balloon goes backward. (a) False (b) True
5. 5.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
6. 6.True or false: the swimmer goes forward. (a) True (b) False
7. 7.⚖️ 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) distance it travels (c) the same straw (d) how big we blow it
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.🚀 Which of these goes backward? (a) the swimmer (b) water from the oars (c) the balloon (d) the rowing boat
11. 11.🔮 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
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) a drinking straw (d) a mirror
13. 13.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) escaping air pushes it (d) a magnet pulls it
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
16. 16.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
17. 17.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) forward (c) straight down (d) it stays still
18. 18.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a fridge magnet (d) a sundial
19. 19.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) put string round a neck (d) blow it till it bursts
20. 20.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it changes colour (d) it turns into a kite
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) vinegar (c) a long string (d) a drinking straw
22. 22.True or false: the rocket goes forward. (a) True (b) False
23. 23.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) two chairs (c) a long string (d) a balloon
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) yeast (d) a drinking straw
26. 26.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
27. 27.🎈 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
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) True (b) False
29. 29.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
30. 30.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) water from the oars (d) the swimmer
31. 31.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
32. 32.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) air from the balloon (d) the rocket
33. 33.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
35. 35.True or false: water a swimmer pushes goes forward. (a) True (b) False
36. 36.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
39. 39.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) sticky tape (c) a magnet (d) a mirror
40. 40.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward

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