Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 257 · 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.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
2. 2.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
4. 4.🔮 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
5. 5.True or false: the rowing boat goes forward. (a) True (b) False
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) yeast (d) sticky tape
7. 7.True or false: the balloon goes forward. (a) False (b) True
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.True or false: gas from the rocket goes forward. (a) True (b) False
10. 10.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
11. 11.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
12. 12.⚖️ 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) False (b) True
13. 13.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it speeds up (d) it travels farther
14. 14.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
15. 15.⚖️ 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 change it (c) we measure it
16. 16.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the rocket (c) the swimmer (d) the rowing boat
17. 17.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it holds water (c) it blows air in (d) it guides the balloon
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the same string (c) distance it travels (d) the same tape
19. 19.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
20. 20.🚀 Which of these goes forward? (a) the swimmer (b) water from the oars (c) gas from the rocket (d) water a swimmer pushes
21. 21.True or false: yeast is needed for the balloon rocket. (a) True (b) False
22. 22.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
23. 23.⚖️ 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 same string (c) the same straw (d) how big we blow it
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
25. 25.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) blow it till it bursts (d) keep it away from faces
26. 26.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
27. 27.🎈 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
28. 28.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) a magnet (c) a battery cell (d) a mirror
30. 30.True or false: the rocket goes forward. (a) False (b) True
31. 31.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) it goes faster (d) more friction, less far
32. 32.🎈 When does the balloon rocket stop? (a) it never stops (b) when it gets cold (c) when it turns blue (d) when the air runs out
33. 33.True or false: water from the oars goes backward. (a) False (b) True
34. 34.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
35. 35.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
36. 36.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) turmeric powder (c) a mirror (d) vinegar
37. 37.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
38. 38.📘 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
39. 39.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) gas from the rocket (d) the rocket
40. 40.True or false: air from the balloon goes backward. (a) True (b) False

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