Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 319 · 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 a drinking straw for the balloon rocket? (a) not needed (b) needed
2. 2.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
3. 3.🎈 What is the job of the straw on the string? (a) it blows air in (b) it guides the balloon (c) it holds water (d) it makes it heavier
4. 4.True or false: water a swimmer pushes goes backward. (a) False (b) True
5. 5.True or false: yeast is needed for the balloon rocket. (a) False (b) True
6. 6.⚖️ 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
7. 7.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
8. 8.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
9. 9.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a magnet (c) a mirror (d) a long string
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) distance it travels (c) the same string (d) the slope of the string
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
13. 13.⚖️ 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
14. 14.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when the air runs out (c) when it gets cold (d) it never stops
15. 15.⚖️ 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
16. 16.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it gets too heavy (c) it changes colour (d) it turns into a kite
17. 17.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) vinegar (d) sticky tape
18. 18.True or false: air from the balloon goes forward. (a) True (b) False
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) vinegar (d) a balloon
20. 20.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) sticky tape (c) a balloon (d) a long string
21. 21.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) the rocket (d) gas from the rocket
22. 22.True or false: a long string is needed for the balloon rocket. (a) False (b) True
23. 23.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes less far (c) it goes much farther (d) it turns into a kite
24. 24.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) more friction, less far (c) it goes faster (d) less friction
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a battery cell (d) sticky tape
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 change it (b) we measure it (c) we keep it the same
30. 30.True or false: the swimmer goes backward. (a) True (b) False
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) yeast (d) two chairs
32. 32.⚖️ 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
33. 33.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the slope of the string (c) distance it travels
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
36. 36.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels farther (d) it travels less far
37. 37.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) water a swimmer pushes (d) the swimmer
38. 38.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
39. 39.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) it stays still (c) straight down (d) backward
40. 40.🛟 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

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