Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 568 · 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 should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it can pop loudly (d) it turns into a kite
2. 2.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a mirror (c) a balloon rocket (d) a fridge magnet
3. 3.🎈 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
4. 4.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) keep it away from faces (c) put string round a neck (d) aim it at your friend
5. 5.🚀 Which of these goes forward? (a) air from the balloon (b) water a swimmer pushes (c) water from the oars (d) the swimmer
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same string
8. 8.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it gets cold (c) when it turns blue (d) it never stops
9. 9.True or false: gas from the rocket goes backward. (a) False (b) True
10. 10.🔮 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
11. 11.🧺 Which of these is not needed for the balloon rocket? (a) vinegar (b) sticky tape (c) two chairs (d) a long string
12. 12.⚖️ 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 change it (c) we measure it
13. 13.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) no change at all (c) less friction (d) it goes faster
14. 14.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
15. 15.True or false: air from the balloon goes forward. (a) True (b) False
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) keep them in your mouth (d) throw them away safely
18. 18.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
19. 19.🚀 Which of these goes backward? (a) the rowing boat (b) water from the oars (c) the balloon (d) the rocket
20. 20.⚖️ 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
21. 21.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
22. 22.True or false: water from the oars goes backward. (a) False (b) True
23. 23.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
24. 24.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it flies off the string (d) it goes less far
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a magnet (c) two chairs (d) a balloon
26. 26.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
27. 27.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) distance it travels (c) the same string (d) how big we blow it
30. 30.True or false: the swimmer goes backward. (a) True (b) False
31. 31.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the balloon (c) the rocket (d) the swimmer
32. 32.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
33. 33.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) sticky tape (c) yeast (d) turmeric powder
34. 34.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
35. 35.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) escaping air pushes it (d) the string pulls it
36. 36.⚖️ 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
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same string (c) distance it travels (d) the same tape
38. 38.True or false: the balloon goes forward. (a) False (b) True
39. 39.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a mirror (c) a drinking straw (d) a long string
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) yeast (c) a long string (d) two chairs

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