Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 855 · 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 battery cell for the balloon rocket? (a) needed (b) not needed
2. 2.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
3. 3.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
4. 4.True or false: water a swimmer pushes goes forward. (a) True (b) False
5. 5.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
6. 6.⚖️ 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) distance it travels (c) the same straw
7. 7.⚖️ 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
8. 8.⚖️ 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
9. 9.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) keep it away from faces (d) blow it till it bursts
10. 10.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it goes much farther (d) it turns into a kite
11. 11.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) the string pulls it (d) a magnet pulls it
12. 12.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) throw them away safely (d) keep them in your mouth
13. 13.🔮 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
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) how big we blow it (c) distance it travels (d) the same tape
15. 15.True or false: a long string is needed for the balloon rocket. (a) False (b) True
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) two chairs (c) sticky tape (d) vinegar
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.⚖️ 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) how big we blow it (d) the slope of the string
19. 19.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🎈 What is the job of the straw on the string? (a) it blows air in (b) it makes it heavier (c) it guides the balloon (d) it holds water
22. 22.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it goes backward first (d) it speeds up
23. 23.True or false: the rocket goes forward. (a) True (b) False
24. 24.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) False (b) True
26. 26.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
27. 27.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) yeast (c) a long string (d) sticky tape
28. 28.⚖️ 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
29. 29.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
30. 30.🧺 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
31. 31.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) it stays still (d) backward
32. 32.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) the swimmer (d) water a swimmer pushes
33. 33.True or false: gas from the rocket goes backward. (a) True (b) False
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) vinegar (c) turmeric powder (d) a balloon
36. 36.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a long string (c) a drinking straw (d) a balloon
38. 38.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
39. 39.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) the balloon (d) water from the oars
40. 40.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it turns blue (c) it never stops (d) when it gets cold

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