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