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: a balloon is needed for the balloon rocket. (a) False (b) True
- 2.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) give them to a baby (d) keep them in your mouth
- 3.⚖️ 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 measure it (c) we keep it the same
- 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) a battery cell (d) a balloon
- 5.True or false: the rocket goes forward. (a) False (b) True
- 6.🧺 Which of these is not needed for the balloon rocket? (a) turmeric powder (b) two chairs (c) a balloon (d) a long string
- 7.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) backward (c) forward (d) it stays still
- 8.True or false: a long string is needed for the balloon rocket. (a) True (b) False
- 9.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) turmeric powder (c) vinegar (d) a drinking straw
- 10.⚖️ 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) False (b) True
- 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
- 12.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
- 13.🛟 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
- 14.🔮 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 much farther (d) it goes less far
- 15.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when it turns blue (c) it never stops (d) when the air runs out
- 16.⚖️ 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 slope of the string
- 17.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water a swimmer pushes (d) the rowing boat
- 18.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) gas from the rocket (d) the swimmer
- 19.True or false: gas from the rocket goes backward. (a) False (b) True
- 20.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
- 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a drinking straw (c) vinegar (d) a balloon
- 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) two chairs (d) a drinking straw
- 23.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it goes backward first (d) it speeds up
- 24.⚖️ 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 tape (c) the same straw (d) how big we blow it
- 25.🚀 Which of these goes backward? (a) the rocket (b) water a swimmer pushes (c) the balloon (d) the swimmer
- 26.⚖️ 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
- 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
- 28.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) yeast (c) a long string (d) a mirror
- 29.True or false: the balloon goes forward. (a) False (b) True
- 30.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
- 31.🚀 Which of these goes forward? (a) the balloon (b) water from the oars (c) water a swimmer pushes (d) air from the balloon
- 32.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
- 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the same string (c) distance it travels (d) the same straw
- 34.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
- 35.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) sticky tape (c) a balloon (d) two chairs
- 36.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) a magnet pulls it (d) escaping air pushes it
- 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a drinking straw (c) two chairs (d) sticky tape
- 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
- 39.⚖️ 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
- 40.True or false: water from the oars goes forward. (a) True (b) False
Answer key
- True
- throw them away safely
- we keep it the same
- a battery cell
- True
- turmeric powder
- forward
- True
- a drinking straw
- False
- we keep it the same
- False
- it can pop loudly
- it goes less far
- when the air runs out
- the slope of the string
- the rowing boat
- the swimmer
- True
- False
- vinegar
- turmeric powder
- it travels less far
- how big we blow it
- water a swimmer pushes
- True
- False
- a long string
- True
- needed
- the balloon
- goes forward
- distance it travels
- needed
- a magnet
- escaping air pushes it
- a mirror
- we keep it the same
- True
- False
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