Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 560 · 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 use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) no change at all (d) more friction, less far
2. 2.⚖️ 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 measure it (c) we change it
3. 3.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a magnet (c) sticky tape (d) a balloon
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
6. 6.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) turmeric powder (c) a balloon (d) a magnet
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the slope of the string (c) the same straw (d) how big we blow it
8. 8.🚀 Which of these goes backward? (a) the swimmer (b) air from the balloon (c) the balloon (d) the rowing boat
9. 9.⚖️ 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
10. 10.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a fridge magnet (d) a balloon rocket
11. 11.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
12. 12.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
13. 13.True or false: water from the oars goes backward. (a) False (b) True
14. 14.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a mirror (c) a battery cell (d) sticky tape
15. 15.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) two chairs (d) a mirror
17. 17.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
18. 18.🎈 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
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) sticky tape (d) two chairs
21. 21.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same straw (c) how big we blow it
24. 24.True or false: air from the balloon goes forward. (a) True (b) False
25. 25.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) air from the balloon (d) the swimmer
26. 26.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when the air runs out (c) it never stops (d) when it gets cold
27. 27.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) blow it till it bursts (d) put string round a neck
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
29. 29.⚖️ 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
30. 30.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it changes colour (d) it can pop loudly
31. 31.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it travels less far (d) it goes backward first
32. 32.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
33. 33.True or false: the rowing boat goes backward. (a) True (b) False
34. 34.True or false: the balloon goes forward. (a) True (b) False
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
36. 36.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same straw (c) how big we blow it (d) the slope of the string
38. 38.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) forward (d) backward
39. 39.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
40. 40.🧺 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) vinegar

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