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