Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 642 · 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? Which of these is the one thing we change? (a) distance it travels (b) how big we blow it (c) the slope of the string (d) the same string
2. 2.🔮 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
3. 3.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) it stays still (c) straight down (d) backward
4. 4.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) keep it away from faces (d) aim it at your friend
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a long string (c) two chairs (d) sticky tape
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) how big we blow it (c) the same string
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: air from the balloon goes forward. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
12. 12.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
13. 13.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) keep them in your mouth (d) give them to a baby
14. 14.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
15. 15.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
18. 18.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
19. 19.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) a balloon (d) yeast
21. 21.True or false: water from the oars goes forward. (a) True (b) False
22. 22.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) the rowing boat (d) water a swimmer pushes
23. 23.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a fridge magnet (c) a balloon rocket (d) a sundial
24. 24.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) a balloon (d) turmeric powder
26. 26.🎈 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
27. 27.🚀 Which of these goes backward? (a) the rowing boat (b) the balloon (c) air from the balloon (d) the swimmer
28. 28.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when the air runs out (c) it never stops (d) when it gets cold
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) turmeric powder (c) a battery cell (d) vinegar
30. 30.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) escaping air pushes it (c) the straw is heavy (d) the string pulls it
31. 31.True or false: a mirror is needed for the balloon rocket. (a) False (b) True
32. 32.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
33. 33.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
34. 34.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
35. 35.True or false: gas from the rocket goes backward. (a) False (b) True
36. 36.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it goes backward first (d) it travels farther
37. 37.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
38. 38.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) a mirror (d) sticky tape
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) False (b) True
40. 40.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True

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