Balloon Rocket STEM Worksheet

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

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