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