Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 638 · 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.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) more friction, less far (d) it goes faster
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a long string (c) sticky tape (d) a drinking straw
3. 3.⚖️ 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) the same straw (c) the slope of the string (d) how big we blow it
4. 4.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a balloon rocket (c) a mirror (d) a fridge magnet
5. 5.⚖️ 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) False (b) True
6. 6.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it travels farther (c) it goes backward first (d) it speeds up
7. 7.🎈 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
8. 8.🚀 Which of these goes forward? (a) the balloon (b) air from the balloon (c) water a swimmer pushes (d) water from the oars
9. 9.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) a balloon (c) a long string (d) two chairs
10. 10.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) yeast (c) turmeric powder (d) a long string
11. 11.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
12. 12.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) turmeric powder (c) sticky tape (d) a balloon
13. 13.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
14. 14.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) blow it till it bursts (d) aim it at your friend
15. 15.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a drinking straw (c) a battery cell (d) a magnet
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) vinegar (c) a balloon (d) sticky tape
17. 17.🛟 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
18. 18.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) a mirror (d) sticky tape
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) False (b) True
22. 22.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) distance it travels (c) the slope of the string (d) the same tape
24. 24.True or false: water from the oars goes backward. (a) True (b) False
25. 25.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
26. 26.True or false: the swimmer goes forward. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) yeast (d) a long string
31. 31.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) turmeric powder (d) a drinking straw
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
34. 34.True or false: the rocket goes backward. (a) True (b) False
35. 35.⚖️ 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
36. 36.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) sticky tape (c) a magnet (d) a balloon
38. 38.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed

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