Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 100 · 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 goes backward? (a) water from the oars (b) the swimmer (c) the rocket (d) the rowing boat
2. 2.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) air from the balloon (d) the rocket
3. 3.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🔮 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
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) how big we blow it (c) the same straw (d) the same tape
7. 7.⚖️ 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
8. 8.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the same straw (c) how big we blow it (d) distance it travels
10. 10.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
13. 13.🔮 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
14. 14.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
15. 15.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it gets too heavy (d) it can pop loudly
16. 16.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) yeast (c) a balloon (d) a battery cell
17. 17.⚖️ 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 tape
18. 18.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the swimmer (d) water a swimmer pushes
19. 19.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
20. 20.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it guides the balloon (d) it holds water
21. 21.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the rowing boat (d) gas from the rocket
22. 22.True or false: yeast is needed for the balloon rocket. (a) True (b) False
23. 23.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) sticky tape (c) a long string (d) a balloon
25. 25.🔮 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
26. 26.True or false: the rocket goes backward. (a) True (b) False
27. 27.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a balloon (d) a magnet
28. 28.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) yeast (d) a balloon
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
31. 31.True or false: water from the oars goes forward. (a) True (b) False
32. 32.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
33. 33.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
34. 34.True or false: the swimmer goes backward. (a) False (b) True
35. 35.🚀 Which of these goes backward? (a) gas from the rocket (b) the swimmer (c) the balloon (d) the rowing boat
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
37. 37.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
38. 38.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
39. 39.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
40. 40.True or false: gas from the rocket goes backward. (a) True (b) False

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids