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? Which of these is what we measure? (a) the same string (b) the slope of the string (c) distance it travels (d) the same tape
- 2.🚀 Which of these goes forward? (a) the swimmer (b) water from the oars (c) gas from the rocket (d) air from the balloon
- 3.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
- 4.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) turmeric powder (c) a magnet (d) two chairs
- 5.🛟 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
- 6.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
- 7.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
- 8.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) gas from the rocket (d) water from the oars
- 9.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
- 10.🚀 Which of these goes forward? (a) air from the balloon (b) water a swimmer pushes (c) the rocket (d) water from the oars
- 11.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
- 12.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) distance it travels (c) how big we blow it
- 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) how big we blow it (c) distance it travels
- 14.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) two chairs (c) yeast (d) a balloon
- 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a magnet (d) a long string
- 16.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a fridge magnet (c) a sundial (d) a balloon rocket
- 17.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the balloon (c) the rocket (d) the swimmer
- 18.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
- 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a battery cell (c) two chairs (d) a balloon
- 20.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) turmeric powder (c) a drinking straw (d) two chairs
- 21.True or false: gas from the rocket goes backward. (a) False (b) True
- 22.True or false: the rocket goes forward. (a) False (b) True
- 23.🎈 What is the job of the straw on the string? (a) it holds water (b) it guides the balloon (c) it makes it heavier (d) it blows air in
- 24.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
- 25.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) keep it away from faces (d) aim it at your friend
- 26.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) forward (c) it stays still (d) backward
- 27.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
- 28.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
- 29.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a battery cell (c) a magnet (d) a balloon
- 30.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a magnet (c) a battery cell (d) a drinking straw
- 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) True (b) False
- 32.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
- 33.⚖️ 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
- 34.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
- 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) a long string (d) a mirror
- 36.True or false: water from the oars goes forward. (a) False (b) True
- 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) turmeric powder (d) a drinking straw
- 38.🎈 When does the balloon rocket stop? (a) when the air runs out (b) it never stops (c) when it turns blue (d) when it gets cold
- 39.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it goes less far (d) it turns into a kite
- 40.⚖️ 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 change it (c) we measure it
Answer key
- distance it travels
- the swimmer
- goes backward
- two chairs
- throw them away safely
- True
- not needed
- the balloon
- we keep it the same
- the rocket
- not needed
- the same tape
- the same straw
- yeast
- a magnet
- a balloon rocket
- water a swimmer pushes
- True
- a battery cell
- turmeric powder
- True
- True
- it guides the balloon
- False
- keep it away from faces
- forward
- goes backward
- True
- a balloon
- a drinking straw
- False
- goes forward
- False
- True
- a mirror
- False
- turmeric powder
- when the air runs out
- it goes less far
- we change it
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