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