Balloon Rocket STEM Worksheet
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.
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- 1.⚖️ 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 string (c) distance it travels (d) how big we blow it
- 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a drinking straw (d) a magnet
- 3.True or false: the rowing boat goes forward. (a) True (b) False
- 4.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
- 5.True or false: water a swimmer pushes goes backward. (a) False (b) True
- 6.⚖️ 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
- 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
- 8.⚖️ 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 keep it the same (c) we change it
- 9.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
- 10.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) vinegar (c) a drinking straw (d) turmeric powder
- 11.🎈 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
- 12.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a balloon rocket (d) a sundial
- 13.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) water a swimmer pushes (d) the rowing boat
- 14.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) aim it at your friend (d) blow it till it bursts
- 15.🚀 Which of these goes backward? (a) gas from the rocket (b) the rocket (c) the swimmer (d) the rowing boat
- 16.⚖️ 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
- 17.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
- 18.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) yeast (d) sticky tape
- 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we change it (c) we measure it
- 20.True or false: air from the balloon goes forward. (a) False (b) True
- 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) how big we blow it (c) distance it travels
- 22.True or false: water a swimmer pushes goes forward. (a) True (b) False
- 23.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a long string (c) turmeric powder (d) two chairs
- 24.🚀 Which of these goes forward? (a) the balloon (b) gas from the rocket (c) air from the balloon (d) water a swimmer pushes
- 25.🧺 Which of these is needed for the balloon rocket? (a) sticky tape (b) a mirror (c) vinegar (d) a battery cell
- 26.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
- 27.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a battery cell (c) a balloon (d) a drinking straw
- 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the same string (c) how big we blow it (d) distance it travels
- 29.True or false: gas from the rocket goes forward. (a) True (b) False
- 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) sticky tape (d) turmeric powder
- 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) False (b) True
- 32.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
- 33.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a drinking straw (c) a long string (d) a mirror
- 34.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
- 35.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
- 36.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
- 37.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
- 38.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
- 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) vinegar (d) a balloon
- 40.True or false: the rocket goes backward. (a) False (b) True
Answer key
- how big we blow it
- a magnet
- True
- True
- True
- False
- True
- we keep it the same
- we keep it the same
- a drinking straw
- escaping air pushes it
- a balloon rocket
- water a swimmer pushes
- keep it away from faces
- gas from the rocket
- we keep it the same
- goes backward
- yeast
- we keep it the same
- False
- the same tape
- False
- turmeric powder
- the balloon
- sticky tape
- it goes less far
- a battery cell
- distance it travels
- False
- turmeric powder
- False
- False
- a mirror
- not needed
- False
- goes forward
- False
- not needed
- vinegar
- False
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