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