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 is needed for the balloon rocket? (a) a balloon (b) a magnet (c) a battery cell (d) a mirror
- 2.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) distance it travels (c) the same tape (d) the same string
- 3.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
- 4.⚖️ 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
- 5.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) yeast (d) two chairs
- 6.⚖️ 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
- 7.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
- 8.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it goes less far (c) it turns into a kite (d) it flies off the string
- 9.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
- 10.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
- 11.True or false: water from the oars goes forward. (a) True (b) False
- 12.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) a drinking straw (d) a magnet
- 13.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) yeast (c) a long string (d) a balloon
- 14.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) a battery cell (c) turmeric powder (d) a mirror
- 15.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
- 17.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
- 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
- 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a balloon (d) a long string
- 20.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) more friction, less far (d) it goes faster
- 21.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
- 22.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it turns into a kite (d) it changes colour
- 23.True or false: gas from the rocket goes backward. (a) True (b) False
- 24.⚖️ 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
- 25.⚖️ 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 straw
- 26.⚖️ 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
- 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
- 28.True or false: the rocket goes backward. (a) False (b) True
- 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a balloon (d) a drinking straw
- 30.True or false: water from the oars goes backward. (a) True (b) False
- 31.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
- 32.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) the rocket (d) air from the balloon
- 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a drinking straw (c) two chairs (d) sticky tape
- 34.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it makes it heavier (d) it guides the balloon
- 35.⚖️ 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 same straw (c) the same string (d) how big we blow it
- 36.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
- 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) yeast (c) a long string (d) sticky tape
- 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
- 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a magnet (d) sticky tape
- 40.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
Answer key
- a balloon
- distance it travels
- needed
- True
- two chairs
- False
- goes forward
- it goes less far
- throw them away safely
- not needed
- False
- a magnet
- yeast
- a drinking straw
- needed
- we measure it
- goes forward
- we keep it the same
- turmeric powder
- more friction, less far
- needed
- it can pop loudly
- True
- we keep it the same
- the same straw
- False
- True
- False
- a battery cell
- True
- True
- the rocket
- vinegar
- it guides the balloon
- how big we blow it
- not needed
- yeast
- we keep it the same
- a magnet
- not needed
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