Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 507 · 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 turns into a kite (b) it can pop loudly (c) it gets too heavy (d) it changes colour
2. 2.🔮 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
3. 3.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a drinking straw (c) two chairs (d) a balloon
5. 5.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
6. 6.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) gas from the rocket (d) water from the oars
7. 7.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
8. 8.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
9. 9.True or false: water from the oars goes backward. (a) True (b) False
10. 10.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) turmeric powder (d) a balloon
11. 11.True or false: air from the balloon goes backward. (a) True (b) False
12. 12.⚖️ 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 slope of the string (c) how big we blow it (d) the same straw
13. 13.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
14. 14.⚖️ 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
15. 15.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
16. 16.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
17. 17.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
18. 18.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it travels farther (d) it speeds up
19. 19.⚖️ 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
20. 20.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) put string round a neck (d) keep it away from faces
21. 21.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) backward (c) it stays still (d) straight down
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) the same straw (c) distance it travels (d) how big we blow it
23. 23.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
24. 24.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
25. 25.🎈 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
26. 26.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it turns into a kite (c) it goes less far (d) it goes much farther
27. 27.⚖️ 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 measure it (c) we keep it the same
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) two chairs (c) a magnet (d) yeast
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
31. 31.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
32. 32.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) sticky tape (c) a long string (d) a battery cell
34. 34.True or false: water a swimmer pushes goes forward. (a) True (b) False
35. 35.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) turmeric powder (c) a drinking straw (d) a mirror
36. 36.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
37. 37.🚀 Which of these goes forward? (a) the rowing boat (b) water a swimmer pushes (c) air from the balloon (d) gas from the rocket
38. 38.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a long string (c) a drinking straw (d) a magnet
39. 39.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the rocket (c) water from the oars (d) gas from the rocket
40. 40.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward

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