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