Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 917 · 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.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) a long string (c) two chairs (d) a drinking straw
2. 2.🚀 Which of these goes backward? (a) water from the oars (b) the rowing boat (c) the swimmer (d) the balloon
3. 3.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it makes it heavier (d) it guides the balloon
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a battery cell (c) a drinking straw (d) sticky tape
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) the slope of the string (c) distance it travels (d) how big we blow it
6. 6.True or false: the swimmer goes forward. (a) False (b) True
7. 7.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
9. 9.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it goes much farther (d) it flies off the string
10. 10.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) a long string (d) a mirror
11. 11.🛟 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
12. 12.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) it never stops (d) when it turns blue
13. 13.🎈 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
14. 14.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) aim it at your friend (d) keep it away from faces
15. 15.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a long string (c) two chairs (d) sticky tape
17. 17.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
19. 19.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
20. 20.📘 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
21. 21.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
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.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the balloon (c) water from the oars (d) gas from the rocket
24. 24.True or false: the balloon goes backward. (a) True (b) False
25. 25.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
26. 26.🚀 Which of these goes forward? (a) the rocket (b) water from the oars (c) gas from the rocket (d) air from the balloon
27. 27.⚖️ 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
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ 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
30. 30.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it travels farther (c) it goes backward first (d) it speeds up
31. 31.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) turmeric powder (d) a balloon
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) distance it travels (c) how big we blow it (d) the same string
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) vinegar (c) turmeric powder (d) a long string
35. 35.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
36. 36.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the balloon (d) water a swimmer pushes
37. 37.⚖️ 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
38. 38.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
39. 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) yeast (d) two chairs
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) distance it travels (c) how big we blow it

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