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 goes forward? (a) air from the balloon (b) water a swimmer pushes (c) the balloon (d) gas from the rocket
- 2.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) the same straw (c) distance it travels (d) how big we blow it
- 3.🚀 Which of these goes forward? (a) water from the oars (b) the rowing boat (c) water a swimmer pushes (d) gas from the rocket
- 4.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
- 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
- 6.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
- 7.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) two chairs (c) turmeric powder (d) a magnet
- 8.True or false: air from the balloon goes backward. (a) True (b) False
- 9.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) put string round a neck (c) keep it away from faces (d) aim it at your friend
- 10.🚀 Which of these goes forward? (a) gas from the rocket (b) the rocket (c) water a swimmer pushes (d) air from the balloon
- 11.True or false: water from the oars goes backward. (a) False (b) True
- 12.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
- 13.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
- 14.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
- 15.⚖️ 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
- 16.True or false: water a swimmer pushes goes forward. (a) False (b) True
- 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same straw (c) the slope of the string (d) the same tape
- 18.True or false: yeast is needed for the balloon rocket. (a) True (b) False
- 19.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
- 20.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
- 21.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
- 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
- 23.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
- 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 change it (c) we keep it the same
- 25.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it changes colour (d) it turns into a kite
- 26.🚀 Which of these goes backward? (a) the balloon (b) air from the balloon (c) the rocket (d) the swimmer
- 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
- 28.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
- 29.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
- 30.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) water a swimmer pushes (d) the rowing boat
- 31.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same string (c) how big we blow it
- 32.⚖️ 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
- 33.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
- 34.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) throw them away safely (d) chew them
- 35.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
- 36.True or false: air from the balloon goes forward. (a) False (b) True
- 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) yeast (c) a balloon (d) sticky tape
- 38.🚀 Which of these goes backward? (a) the rocket (b) gas from the rocket (c) the balloon (d) the swimmer
- 39.True or false: the rowing boat goes forward. (a) False (b) True
- 40.⚖️ 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
Answer key
- the balloon
- distance it travels
- the rowing boat
- True
- True
- not needed
- two chairs
- True
- keep it away from faces
- the rocket
- True
- goes backward
- goes forward
- not needed
- we keep it the same
- False
- how big we blow it
- False
- needed
- True
- False
- False
- not needed
- we keep it the same
- it can pop loudly
- air from the balloon
- False
- needed
- needed
- water a swimmer pushes
- the same string
- we keep it the same
- goes forward
- throw them away safely
- False
- False
- yeast
- gas from the rocket
- True
- we change it
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