Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 589 · 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) the rocket (b) the balloon (c) gas from the rocket (d) the swimmer
2. 2.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it can pop loudly (c) it changes colour (d) it gets too heavy
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) how big we blow it (c) the same string (d) distance it travels
4. 4.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
5. 5.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) escaping air pushes it (d) a magnet pulls it
6. 6.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
7. 7.True or false: the swimmer goes forward. (a) True (b) False
8. 8.🧺 Which of these is needed for the balloon rocket? (a) two chairs (b) a battery cell (c) turmeric powder (d) a mirror
9. 9.True or false: turmeric powder is not needed for the balloon rocket. (a) True (b) False
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) True (b) False
12. 12.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
13. 13.🔮 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
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) yeast (d) a long string
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) vinegar (b) a long string (c) a drinking straw (d) a balloon
17. 17.⚖️ 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 measure it (c) we keep it the same
18. 18.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
19. 19.True or false: water from the oars goes forward. (a) False (b) True
20. 20.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) a battery cell (c) vinegar (d) a mirror
21. 21.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a mirror (d) sticky tape
22. 22.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a fridge magnet (c) a mirror (d) a balloon rocket
23. 23.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it blows air in (c) it makes it heavier (d) it holds water
24. 24.⚖️ 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
25. 25.True or false: air from the balloon goes forward. (a) False (b) True
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) distance it travels (c) the same tape (d) the same straw
27. 27.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
28. 28.🚀 Which of these goes backward? (a) the rowing boat (b) water a swimmer pushes (c) the balloon (d) the swimmer
29. 29.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) vinegar (d) a drinking straw
31. 31.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) a magnet (c) yeast (d) vinegar
32. 32.True or false: gas from the rocket goes forward. (a) True (b) False
33. 33.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) throw them away safely (d) give them to a baby
34. 34.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it travels farther (d) it goes backward first
35. 35.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) backward (d) it stays still
36. 36.🔮 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
37. 37.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
38. 38.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) a drinking straw (c) a long string (d) sticky tape
39. 39.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) aim it at your friend (d) put string round a neck
40. 40.True or false: water from the oars goes backward. (a) True (b) False

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