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