Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 104 · 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: water from the oars goes forward. (a) False (b) True
2. 2.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
3. 3.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
4. 4.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
5. 5.True or false: the rocket goes forward. (a) True (b) False
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) vinegar (c) a drinking straw (d) a balloon
7. 7.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) a magnet pulls it (d) escaping air pushes it
8. 8.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a battery cell (c) a long string (d) two chairs
9. 9.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) give them to a baby (d) keep them in your mouth
10. 10.⚖️ 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
11. 11.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) water a swimmer pushes (d) the swimmer
12. 12.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
13. 13.🚀 Which of these goes backward? (a) the rowing boat (b) air from the balloon (c) the rocket (d) the balloon
14. 14.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
15. 15.⚖️ 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
16. 16.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) the rowing boat (d) water from the oars
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 string
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
19. 19.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a fridge magnet (c) a sundial (d) a mirror
20. 20.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it goes less far (d) it flies off the string
21. 21.True or false: the balloon goes backward. (a) True (b) False
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) True (b) False
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) how big we blow it (c) distance it travels (d) the same tape
25. 25.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) a magnet (c) a battery cell (d) yeast
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
27. 27.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a long string (c) a balloon (d) a mirror
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) a magnet (d) two chairs
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) keep it away from faces (d) put string round a neck
31. 31.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a balloon (c) yeast (d) a battery cell
32. 32.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
33. 33.⚖️ 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 slope of the string (c) the same string (d) how big we blow it
34. 34.True or false: yeast is needed for the balloon rocket. (a) False (b) True
35. 35.True or false: gas from the rocket goes forward. (a) False (b) True
36. 36.True or false: the rowing boat goes forward. (a) True (b) False
37. 37.True or false: a long string is needed for the balloon rocket. (a) False (b) True
38. 38.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it makes it heavier (c) it holds water (d) it blows air in
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a long string (d) a mirror

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