Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 95 · 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) True (b) False
2. 2.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) straight down (d) forward
3. 3.🚀 Which of these goes backward? (a) the rowing boat (b) air from the balloon (c) the rocket (d) the balloon
4. 4.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
5. 5.True or false: the swimmer goes backward. (a) False (b) True
6. 6.True or false: the swimmer goes forward. (a) True (b) False
7. 7.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) put string round a neck (c) blow it till it bursts (d) keep it away from faces
8. 8.🚀 Which of these goes forward? (a) water from the oars (b) the balloon (c) air from the balloon (d) gas from the rocket
9. 9.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
10. 10.⚖️ 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
11. 11.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it gets too heavy (d) it can pop loudly
12. 12.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
13. 13.⚖️ 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
14. 14.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) True (b) False
16. 16.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a mirror (c) a drinking straw (d) a long string
18. 18.⚖️ 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) the same straw (c) the same string (d) how big we blow it
19. 19.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
20. 20.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the rowing boat (c) the swimmer (d) the rocket
21. 21.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
22. 22.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) vinegar (d) sticky tape
24. 24.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a long string (c) yeast (d) a mirror
25. 25.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
26. 26.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) throw them away safely (c) keep them in your mouth (d) chew them
27. 27.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a long string (c) a drinking straw (d) a balloon
30. 30.True or false: the rowing boat goes forward. (a) False (b) True
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the same string (c) distance it travels
32. 32.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
33. 33.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) more friction, less far (c) it goes faster (d) no change at all
34. 34.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
35. 35.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a mirror (c) a balloon (d) a long string
36. 36.⚖️ 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 tape (c) distance it travels (d) the same straw
37. 37.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) escaping air pushes it (d) the straw is heavy
38. 38.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a battery cell (d) two chairs
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) yeast (c) a balloon (d) a long string

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