Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 615 · 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.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the string pulls it (c) a magnet pulls it (d) the straw is heavy
2. 2.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
3. 3.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
4. 4.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it can pop loudly (d) it gets too heavy
5. 5.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels farther (d) it travels less far
6. 6.🛟 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
7. 7.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
10. 10.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) put string round a neck (c) keep it away from faces (d) aim it at your friend
11. 11.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
13. 13.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
14. 14.🎈 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
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a drinking straw (c) two chairs (d) a balloon
16. 16.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
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 keep it the same (b) we change it (c) we measure it
18. 18.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it goes much farther (c) it flies off the string (d) it turns into a kite
19. 19.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) more friction, less far (c) it goes faster (d) no change at all
20. 20.🧺 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
21. 21.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) water a swimmer pushes (d) the balloon
25. 25.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a battery cell (d) a balloon
27. 27.⚖️ 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 tape
28. 28.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) two chairs (c) sticky tape (d) a drinking straw
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) distance it travels (c) how big we blow it
30. 30.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
31. 31.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) water from the oars (d) the swimmer
32. 32.True or false: air from the balloon goes backward. (a) False (b) True
33. 33.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
34. 34.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when it gets cold (c) it never stops (d) when the air runs out
35. 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) yeast (d) a drinking straw
36. 36.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) sticky tape (d) vinegar
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 tape (c) the same straw (d) the same string
38. 38.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) forward (d) it stays still
39. 39.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) vinegar (c) a long string (d) yeast
40. 40.True or false: water from the oars goes backward. (a) True (b) False

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