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