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) distance it travels (b) the same tape (c) the same string (d) how big we blow it
- 2.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a battery cell (c) a balloon (d) vinegar
- 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a drinking straw (c) two chairs (d) a balloon
- 4.True or false: a long string is needed for the balloon rocket. (a) False (b) True
- 5.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a mirror (c) sticky tape (d) a drinking straw
- 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
- 7.True or false: water a swimmer pushes goes backward. (a) False (b) True
- 8.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
- 9.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a sundial (d) a fridge magnet
- 10.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
- 11.⚖️ 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
- 12.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
- 13.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
- 14.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) water a swimmer pushes (d) the balloon
- 15.True or false: a battery cell is not needed for the balloon rocket. (a) True (b) False
- 16.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
- 17.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
- 18.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it turns blue (d) when it gets cold
- 19.🚀 Which of these goes forward? (a) air from the balloon (b) water a swimmer pushes (c) the swimmer (d) gas from the rocket
- 20.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
- 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a mirror (c) sticky tape (d) two chairs
- 22.True or false: the swimmer goes forward. (a) True (b) False
- 23.⚖️ 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 keep it the same (c) we change it
- 24.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we keep it the same (c) we change it
- 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) False (b) True
- 26.🛟 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
- 27.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
- 28.True or false: gas from the rocket goes backward. (a) False (b) True
- 29.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) sticky tape (c) a drinking straw (d) a balloon
- 30.⚖️ 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 keep it the same (c) we change it
- 31.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
- 32.🧺 Which of these is needed for the balloon rocket? (a) two chairs (b) a magnet (c) turmeric powder (d) a mirror
- 33.🚀 Which of these goes backward? (a) the swimmer (b) the rocket (c) the rowing boat (d) water from the oars
- 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) two chairs (d) a battery cell
- 35.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same string
- 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
- 37.🧺 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
- 38.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 39.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
- 40.🔮 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
Answer key
- how big we blow it
- a balloon
- a magnet
- True
- a mirror
- we measure it
- True
- goes backward
- a balloon rocket
- not needed
- True
- True
- False
- water a swimmer pushes
- True
- needed
- goes backward
- when the air runs out
- the swimmer
- goes forward
- a mirror
- True
- we keep it the same
- we keep it the same
- False
- keep it away from faces
- goes forward
- True
- a magnet
- we change it
- goes forward
- two chairs
- water from the oars
- a battery cell
- the same string
- True
- turmeric powder
- needed
- goes backward
- it goes less far
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