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