Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 846 · 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.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
2. 2.True or false: the swimmer goes backward. (a) True (b) False
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
6. 6.⚖️ 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 straw (c) how big we blow it
7. 7.True or false: a long string is needed for the balloon rocket. (a) False (b) True
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it speeds up (d) it travels farther
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) False (b) True
10. 10.🛟 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
11. 11.True or false: the balloon goes backward. (a) False (b) True
12. 12.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a sundial (d) a fridge magnet
13. 13.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
14. 14.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it guides the balloon (c) it blows air in (d) it holds water
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) distance it travels (c) how big we blow it (d) the same straw
16. 16.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
17. 17.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
18. 18.🔮 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
19. 19.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
20. 20.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
21. 21.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
22. 22.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) the balloon (d) water from the oars
23. 23.True or false: water a swimmer pushes goes forward. (a) True (b) False
24. 24.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) no change at all (d) more friction, less far
25. 25.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) two chairs (c) a battery cell (d) yeast
26. 26.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
27. 27.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) a balloon (d) vinegar
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.🧺 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
31. 31.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
32. 32.True or false: air from the balloon goes backward. (a) False (b) True
33. 33.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the slope of the string (c) how big we blow it
35. 35.🚀 Which of these goes backward? (a) the rocket (b) water a swimmer pushes (c) the balloon (d) the rowing boat
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
38. 38.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
39. 39.🎈 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
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we change it (c) we measure it

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