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