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.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
- 2.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 3.⚖️ 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
- 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) a mirror (d) two chairs
- 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) two chairs (c) a long string (d) a balloon
- 6.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when it gets cold (c) when the air runs out (d) it never stops
- 7.True or false: the rowing boat goes forward. (a) True (b) False
- 8.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
- 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) True (b) False
- 10.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
- 11.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it turns into a kite (d) it goes much farther
- 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) yeast (d) a long string
- 13.⚖️ 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) distance it travels (c) the same tape (d) the same straw
- 14.⚖️ 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 change it (c) we keep it the same
- 15.True or false: the swimmer goes backward. (a) False (b) True
- 16.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) the balloon (d) air from the balloon
- 17.🚀 Which of these goes backward? (a) the rowing boat (b) the balloon (c) water from the oars (d) the rocket
- 18.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
- 19.True or false: air from the balloon goes backward. (a) False (b) True
- 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the same tape (c) distance it travels (d) the slope of the string
- 21.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
- 22.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
- 23.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
- 24.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
- 25.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
- 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
- 27.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
- 28.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
- 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) sticky tape (d) a magnet
- 30.True or false: a long string is needed for the balloon rocket. (a) True (b) False
- 31.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
- 32.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the rocket (c) water from the oars (d) air from the balloon
- 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) distance it travels (c) how big we blow it
- 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) sticky tape (d) turmeric powder
- 35.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) less friction (c) no change at all (d) more friction, less far
- 36.⚖️ 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
- 37.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
- 38.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
- 39.⚖️ 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
- 40.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
Answer key
- False
- needed
- we keep it the same
- a mirror
- vinegar
- when the air runs out
- True
- not needed
- False
- not needed
- it goes less far
- yeast
- how big we blow it
- we change it
- False
- air from the balloon
- water from the oars
- False
- True
- distance it travels
- False
- False
- needed
- not needed
- not needed
- False
- False
- goes forward
- a magnet
- True
- we keep it the same
- the rocket
- the slope of the string
- turmeric powder
- more friction, less far
- we keep it the same
- goes backward
- it can pop loudly
- False
- False
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