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 drinking straw is needed for the balloon rocket. (a) False (b) True
- 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) vinegar (c) a long string (d) two chairs
- 3.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
- 4.🎈 What is the job of the straw on the string? (a) it blows air in (b) it guides the balloon (c) it holds water (d) it makes it heavier
- 5.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) yeast (c) a long string (d) a magnet
- 6.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) give them to a baby (c) chew them (d) throw them away safely
- 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) a balloon (d) a long string
- 8.True or false: gas from the rocket goes backward. (a) False (b) True
- 9.True or false: water from the oars goes forward. (a) False (b) True
- 10.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) the balloon (d) air from the balloon
- 11.True or false: a long string is needed for the balloon rocket. (a) False (b) True
- 12.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) vinegar (d) sticky tape
- 13.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
- 14.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) how big we blow it (c) the same straw (d) the same string
- 15.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
- 16.⚖️ 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
- 17.🎈 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
- 18.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) sticky tape (c) vinegar (d) a balloon
- 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) two chairs (d) sticky tape
- 20.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 21.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
- 22.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) sticky tape (c) two chairs (d) a long string
- 23.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the balloon (c) gas from the rocket (d) air from the balloon
- 24.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
- 25.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) blow it till it bursts (d) aim it at your friend
- 26.True or false: the balloon goes forward. (a) True (b) False
- 27.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
- 28.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
- 29.⚖️ 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
- 30.⚖️ 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
- 31.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it turns into a kite (c) it goes much farther (d) it flies off the string
- 32.⚖️ 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
- 33.⚖️ 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
- 34.True or false: gas from the rocket goes forward. (a) True (b) False
- 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) a magnet
- 36.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) water from the oars (d) the balloon
- 37.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it changes colour (d) it turns into a kite
- 38.⚖️ 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 string (c) how big we blow it (d) distance it travels
- 39.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
- 40.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) the rowing boat (d) air from the balloon
Answer key
- True
- vinegar
- True
- it guides the balloon
- a long string
- throw them away safely
- a battery cell
- True
- False
- air from the balloon
- True
- sticky tape
- needed
- distance it travels
- it travels less far
- False
- escaping air pushes it
- vinegar
- turmeric powder
- needed
- not needed
- yeast
- the balloon
- needed
- keep it away from faces
- True
- not needed
- False
- we keep it the same
- we change it
- it goes less far
- we keep it the same
- we keep it the same
- False
- a magnet
- water from the oars
- it can pop loudly
- how big we blow it
- False
- the rowing boat
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