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.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) a mirror (d) sticky tape
- 2.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the rowing boat (d) gas from the rocket
- 3.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) air from the balloon (d) the rocket
- 4.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) how big we blow it (c) the slope of the string (d) the same string
- 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
- 6.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) give them to a baby (c) chew them (d) throw them away safely
- 7.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
- 8.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
- 9.True or false: the swimmer goes backward. (a) True (b) False
- 10.⚖️ 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 measure it (c) we change it
- 11.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
- 12.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
- 13.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when it gets cold (c) it never stops (d) when the air runs out
- 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) yeast (c) two chairs (d) a long string
- 15.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
- 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
- 17.⚖️ 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
- 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
- 19.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
- 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
- 21.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
- 22.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) the swimmer (d) water a swimmer pushes
- 23.⚖️ 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
- 24.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) air from the balloon (d) the balloon
- 25.True or false: a long string is needed for the balloon rocket. (a) False (b) True
- 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) the same straw (c) the same tape (d) distance it travels
- 27.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
- 28.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) escaping air pushes it (d) the string pulls it
- 29.True or false: water from the oars goes backward. (a) False (b) True
- 30.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a long string (c) a mirror (d) yeast
- 31.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) keep it away from faces (c) put string round a neck (d) blow it till it bursts
- 32.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
- 33.⚖️ 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) distance it travels (c) the same string
- 34.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
- 35.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
- 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
- 37.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) yeast (c) a balloon (d) a battery cell
- 38.True or false: air from the balloon goes forward. (a) True (b) False
- 39.🚀 Which of these goes backward? (a) air from the balloon (b) the balloon (c) the swimmer (d) the rocket
- 40.⚖️ 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
Answer key
- sticky tape
- the rowing boat
- the rocket
- how big we blow it
- True
- throw them away safely
- goes forward
- goes backward
- False
- we keep it the same
- it can pop loudly
- True
- when the air runs out
- yeast
- True
- False
- we keep it the same
- False
- needed
- we keep it the same
- False
- water a swimmer pushes
- we measure it
- the balloon
- True
- distance it travels
- False
- escaping air pushes it
- True
- a long string
- keep it away from faces
- True
- the same string
- needed
- False
- False
- a balloon
- False
- air from the balloon
- False
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