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 swimmer (b) the rocket (c) the rowing boat (d) air from the balloon
- 2.⚖️ 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) how big we blow it (d) the same string
- 3.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) no change at all (c) less friction (d) more friction, less far
- 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a balloon (c) two chairs (d) sticky tape
- 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
- 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) a balloon (d) yeast
- 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
- 8.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) two chairs (c) turmeric powder (d) yeast
- 9.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
- 10.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) the swimmer (d) water a swimmer pushes
- 11.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
- 12.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
- 13.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) put string round a neck (d) aim it at your friend
- 14.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) give them to a baby (c) chew them (d) keep them in your mouth
- 15.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
- 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a battery cell (c) two chairs (d) sticky tape
- 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same string
- 18.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) air from the balloon (d) the rocket
- 19.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it holds water (c) it makes it heavier (d) it blows air in
- 20.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
- 21.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
- 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) True (b) False
- 23.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the rowing boat (c) water from the oars (d) air from the balloon
- 24.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it flies off the string (d) it goes less far
- 25.⚖️ 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 keep it the same (c) we measure it
- 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) turmeric powder (d) sticky tape
- 27.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) vinegar (c) a battery cell (d) sticky tape
- 28.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
- 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we keep it the same (c) we change it
- 30.⚖️ 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
- 31.⚖️ 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) distance it travels (c) how big we blow it
- 32.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) two chairs (c) sticky tape (d) yeast
- 33.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a magnet (c) a battery cell (d) a balloon
- 34.True or false: the rowing boat goes forward. (a) True (b) False
- 35.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
- 36.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) it never stops (d) when it turns blue
- 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the slope of the string (c) distance it travels (d) how big we blow it
- 38.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
- 39.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
- 40.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) yeast (c) a magnet (d) a drinking straw
Answer key
- air from the balloon
- distance it travels
- more friction, less far
- a magnet
- False
- yeast
- we keep it the same
- two chairs
- needed
- water a swimmer pushes
- True
- needed
- keep it away from faces
- throw them away safely
- True
- a battery cell
- the same string
- the rocket
- it guides the balloon
- True
- goes forward
- False
- the rowing boat
- it goes less far
- we keep it the same
- turmeric powder
- sticky tape
- needed
- we keep it the same
- True
- the slope of the string
- yeast
- a balloon
- True
- False
- when the air runs out
- how big we blow it
- goes forward
- goes backward
- a drinking straw
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