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 tape”? (a) we change it (b) we keep it the same (c) we measure it
- 2.🛟 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
- 3.⚖️ 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) distance it travels (c) the slope of the string (d) the same straw
- 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
- 5.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) yeast (c) sticky tape (d) two chairs
- 6.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) yeast (c) a long string (d) a battery cell
- 7.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
- 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a mirror (c) a balloon (d) a long string
- 9.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it changes colour (d) it can pop loudly
- 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
- 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a long string (d) yeast
- 12.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
- 13.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a balloon rocket (d) a mirror
- 14.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same tape (c) the same string (d) the same straw
- 15.⚖️ 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 keep it the same (c) we measure it
- 16.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
- 17.⚖️ 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
- 18.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
- 19.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
- 20.True or false: the rowing boat goes backward. (a) True (b) False
- 21.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) vinegar (c) sticky tape (d) a drinking straw
- 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) vinegar (c) a long string (d) sticky tape
- 23.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) True (b) False
- 24.🚀 Which of these goes backward? (a) the rocket (b) gas from the rocket (c) the rowing boat (d) the balloon
- 25.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the swimmer (c) the balloon (d) the rowing boat
- 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
- 27.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
- 28.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
- 29.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
- 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same tape (c) how big we blow it
- 31.True or false: a magnet is not needed for the balloon rocket. (a) True (b) False
- 32.True or false: water from the oars goes forward. (a) True (b) False
- 33.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it holds water (c) it guides the balloon (d) it blows air in
- 34.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
- 35.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a magnet (c) a drinking straw (d) a balloon
- 36.⚖️ 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
- 37.True or false: gas from the rocket goes backward. (a) True (b) False
- 38.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
- 39.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
- 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
Answer key
- we keep it the same
- throw them away safely
- distance it travels
- False
- yeast
- a long string
- not needed
- a mirror
- it can pop loudly
- False
- yeast
- True
- a balloon rocket
- how big we blow it
- we change it
- goes forward
- True
- needed
- needed
- False
- vinegar
- vinegar
- False
- gas from the rocket
- water a swimmer pushes
- False
- False
- goes forward
- not needed
- the same tape
- True
- False
- it guides the balloon
- not needed
- a magnet
- False
- True
- False
- False
- True
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