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.
NameDateTime takenScore ___ / 40
- 1.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) air from the balloon (d) the balloon
- 2.⚖️ 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 straw (c) how big we blow it (d) the slope of the string
- 3.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
- 4.⚖️ 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
- 5.True or false: a battery cell is not needed for the balloon rocket. (a) True (b) False
- 6.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) less friction (d) no change at all
- 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
- 8.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
- 9.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
- 10.True or false: the balloon goes backward. (a) True (b) False
- 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a magnet (c) sticky tape (d) two chairs
- 12.True or false: water from the oars goes forward. (a) False (b) True
- 13.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
- 14.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
- 15.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
- 16.True or false: gas from the rocket goes backward. (a) True (b) False
- 17.True or false: air from the balloon goes backward. (a) False (b) True
- 18.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) air from the balloon (d) the rocket
- 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) two chairs (c) a long string (d) a drinking straw
- 20.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a long string (c) two chairs (d) sticky tape
- 21.🛟 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
- 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) False (b) True
- 23.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it turns into a kite (d) it can pop loudly
- 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
- 25.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
- 26.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
- 27.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the same straw (c) how big we blow it (d) the same tape
- 28.🎈 When does the balloon rocket stop? (a) when it gets cold (b) it never stops (c) when it turns blue (d) when the air runs out
- 29.True or false: a mirror is needed for the balloon rocket. (a) False (b) True
- 30.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
- 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) two chairs (d) a battery cell
- 32.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
- 33.🧺 Which of these is not needed for the balloon rocket? (a) turmeric powder (b) two chairs (c) sticky tape (d) a balloon
- 34.⚖️ 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
- 35.True or false: the rowing boat goes forward. (a) False (b) True
- 36.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
- 37.🧺 Which of these is needed for the balloon rocket? (a) sticky tape (b) a battery cell (c) turmeric powder (d) vinegar
- 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) yeast (d) two chairs
- 39.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
- 40.True or false: the rocket goes forward. (a) False (b) True
Answer key
- air from the balloon
- distance it travels
- goes forward
- we keep it the same
- True
- more friction, less far
- we measure it
- needed
- goes backward
- False
- a magnet
- False
- it travels less far
- goes forward
- False
- True
- True
- the rocket
- turmeric powder
- a mirror
- throw them away safely
- False
- it can pop loudly
- True
- needed
- not needed
- how big we blow it
- when the air runs out
- False
- goes backward
- a battery cell
- False
- turmeric powder
- False
- True
- False
- sticky tape
- yeast
- needed
- True
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids