Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 248 · 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.⚖️ 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) True (b) False
2. 2.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) two chairs (c) a mirror (d) vinegar
3. 3.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) keep them in your mouth (c) give them to a baby (d) chew them
4. 4.🔮 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
5. 5.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) a magnet pulls it (c) the straw is heavy (d) the string pulls it
6. 6.True or false: a long string is needed for the balloon rocket. (a) False (b) True
7. 7.True or false: water from the oars goes backward. (a) False (b) True
8. 8.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a long string (c) yeast (d) vinegar
9. 9.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a long string (c) a drinking straw (d) turmeric powder
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) distance it travels (c) the same tape (d) how big we blow it
11. 11.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) the balloon (d) water from the oars
12. 12.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
13. 13.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
14. 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a mirror (d) a drinking straw
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) a battery cell (d) a drinking straw
16. 16.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it flies off the string (d) it goes less far
17. 17.🎈 What is the job of the straw on the string? (a) it blows air in (b) it holds water (c) it makes it heavier (d) it guides the balloon
18. 18.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
19. 19.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
20. 20.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
21. 21.True or false: the balloon goes backward. (a) False (b) True
22. 22.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
23. 23.True or false: the rowing boat goes backward. (a) False (b) True
24. 24.True or false: the balloon goes forward. (a) False (b) True
25. 25.True or false: yeast 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) a balloon (b) a long string (c) two chairs (d) vinegar
27. 27.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a balloon (c) vinegar (d) turmeric powder
28. 28.🚀 Which of these goes forward? (a) the swimmer (b) water from the oars (c) gas from the rocket (d) air from the balloon
29. 29.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
30. 30.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
31. 31.True or false: air from the balloon goes backward. (a) True (b) False
32. 32.⚖️ 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 change it (c) we measure it
33. 33.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it turns into a kite (d) it can pop loudly
34. 34.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it gets cold (c) it never stops (d) when it turns blue
35. 35.⚖️ 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 measure it (c) we change it
36. 36.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) backward (d) straight down
37. 37.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
38. 38.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) the same string (c) how big we blow it (d) the slope of the string
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False

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