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